refactor: rename the atom directory to shell

shell/app/BRANDING.json

@@ -0,0 +1,5 @@
+{
+  "project_name": "electron",
+  "product_name": "Electron",
+  "mac_bundle_id": "com.github.Electron"
+}

shell/app/atom_content_client.cc

@@ -0,0 +1,275 @@
+// Copyright (c) 2014 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#include "atom/app/atom_content_client.h"
+
+#include <string>
+#include <vector>
+
+#include "atom/common/options_switches.h"
+#include "base/command_line.h"
+#include "base/files/file_util.h"
+#include "base/strings/string_split.h"
+#include "base/strings/string_util.h"
+#include "base/strings/utf_string_conversions.h"
+#include "content/public/common/content_constants.h"
+#include "content/public/common/pepper_plugin_info.h"
+#include "electron/buildflags/buildflags.h"
+#include "ppapi/shared_impl/ppapi_permissions.h"
+#include "ui/base/l10n/l10n_util.h"
+#include "ui/base/resource/resource_bundle.h"
+#include "url/url_constants.h"
+// In SHARED_INTERMEDIATE_DIR.
+#include "widevine_cdm_version.h"  // NOLINT(build/include)
+
+#if defined(WIDEVINE_CDM_AVAILABLE)
+#include "base/native_library.h"
+#include "content/public/common/cdm_info.h"
+#include "media/base/video_codecs.h"
+#endif  // defined(WIDEVINE_CDM_AVAILABLE)
+
+#if BUILDFLAG(ENABLE_PDF_VIEWER)
+#include "atom/common/atom_constants.h"
+#include "pdf/pdf.h"
+#endif  // BUILDFLAG(ENABLE_PDF_VIEWER)
+
+namespace atom {
+
+namespace {
+
+#if defined(WIDEVINE_CDM_AVAILABLE)
+bool IsWidevineAvailable(
+    base::FilePath* cdm_path,
+    std::vector<media::VideoCodec>* codecs_supported,
+    base::flat_set<media::CdmSessionType>* session_types_supported,
+    base::flat_set<media::EncryptionMode>* modes_supported) {
+  static enum {
+    NOT_CHECKED,
+    FOUND,
+    NOT_FOUND,
+  } widevine_cdm_file_check = NOT_CHECKED;
+
+  if (widevine_cdm_file_check == NOT_CHECKED) {
+    base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
+    *cdm_path = command_line->GetSwitchValuePath(switches::kWidevineCdmPath);
+    if (!cdm_path->empty()) {
+      *cdm_path = cdm_path->AppendASCII(
+          base::GetNativeLibraryName(kWidevineCdmLibraryName));
+      widevine_cdm_file_check = base::PathExists(*cdm_path) ? FOUND : NOT_FOUND;
+    }
+  }
+
+  if (widevine_cdm_file_check == FOUND) {
+    // Add the supported codecs as if they came from the component manifest.
+    // This list must match the CDM that is being bundled with Chrome.
+    codecs_supported->push_back(media::VideoCodec::kCodecVP8);
+    codecs_supported->push_back(media::VideoCodec::kCodecVP9);
+#if BUILDFLAG(USE_PROPRIETARY_CODECS)
+    codecs_supported->push_back(media::VideoCodec::kCodecH264);
+#endif  // BUILDFLAG(USE_PROPRIETARY_CODECS)
+
+    // TODO(crbug.com/767941): Push persistent-license support info here once
+    // we check in a new CDM that supports it on Linux.
+    session_types_supported->insert(media::CdmSessionType::kTemporary);
+#if defined(OS_CHROMEOS)
+    session_types_supported->insert(media::CdmSessionType::kPersistentLicense);
+#endif  // defined(OS_CHROMEOS)
+
+    modes_supported->insert(media::EncryptionMode::kCenc);
+
+    return true;
+  }
+
+  return false;
+}
+#endif  // defined(WIDEVINE_CDM_AVAILABLE)
+
+#if BUILDFLAG(ENABLE_PEPPER_FLASH)
+content::PepperPluginInfo CreatePepperFlashInfo(const base::FilePath& path,
+                                                const std::string& version) {
+  content::PepperPluginInfo plugin;
+
+  plugin.is_out_of_process = true;
+  plugin.name = content::kFlashPluginName;
+  plugin.path = path;
+  plugin.permissions = ppapi::PERMISSION_ALL_BITS;
+
+  std::vector<std::string> flash_version_numbers = base::SplitString(
+      version, ".", base::TRIM_WHITESPACE, base::SPLIT_WANT_NONEMPTY);
+  if (flash_version_numbers.empty())
+    flash_version_numbers.push_back("11");
+  // |SplitString()| puts in an empty string given an empty string. :(
+  else if (flash_version_numbers[0].empty())
+    flash_version_numbers[0] = "11";
+  if (flash_version_numbers.size() < 2)
+    flash_version_numbers.push_back("2");
+  if (flash_version_numbers.size() < 3)
+    flash_version_numbers.push_back("999");
+  if (flash_version_numbers.size() < 4)
+    flash_version_numbers.push_back("999");
+  // E.g., "Shockwave Flash 10.2 r154":
+  plugin.description = plugin.name + " " + flash_version_numbers[0] + "." +
+                       flash_version_numbers[1] + " r" +
+                       flash_version_numbers[2];
+  plugin.version = base::JoinString(flash_version_numbers, ".");
+  content::WebPluginMimeType swf_mime_type(content::kFlashPluginSwfMimeType,
+                                           content::kFlashPluginSwfExtension,
+                                           content::kFlashPluginSwfDescription);
+  plugin.mime_types.push_back(swf_mime_type);
+  content::WebPluginMimeType spl_mime_type(content::kFlashPluginSplMimeType,
+                                           content::kFlashPluginSplExtension,
+                                           content::kFlashPluginSplDescription);
+  plugin.mime_types.push_back(spl_mime_type);
+
+  return plugin;
+}
+
+void AddPepperFlashFromCommandLine(
+    base::CommandLine* command_line,
+    std::vector<content::PepperPluginInfo>* plugins) {
+  base::FilePath flash_path =
+      command_line->GetSwitchValuePath(switches::kPpapiFlashPath);
+  if (flash_path.empty())
+    return;
+
+  auto flash_version =
+      command_line->GetSwitchValueASCII(switches::kPpapiFlashVersion);
+
+  plugins->push_back(CreatePepperFlashInfo(flash_path, flash_version));
+}
+#endif  // BUILDFLAG(ENABLE_PEPPER_FLASH)
+
+void ComputeBuiltInPlugins(std::vector<content::PepperPluginInfo>* plugins) {
+#if BUILDFLAG(ENABLE_PDF_VIEWER)
+  content::PepperPluginInfo pdf_info;
+  pdf_info.is_internal = true;
+  pdf_info.is_out_of_process = true;
+  pdf_info.name = "Chromium PDF Viewer";
+  pdf_info.description = "Portable Document Format";
+  pdf_info.path = base::FilePath::FromUTF8Unsafe(kPdfPluginPath);
+  content::WebPluginMimeType pdf_mime_type(kPdfPluginMimeType, "pdf",
+                                           "Portable Document Format");
+  pdf_info.mime_types.push_back(pdf_mime_type);
+  pdf_info.internal_entry_points.get_interface = chrome_pdf::PPP_GetInterface;
+  pdf_info.internal_entry_points.initialize_module =
+      chrome_pdf::PPP_InitializeModule;
+  pdf_info.internal_entry_points.shutdown_module =
+      chrome_pdf::PPP_ShutdownModule;
+  pdf_info.permissions = ppapi::PERMISSION_PRIVATE | ppapi::PERMISSION_DEV;
+  plugins->push_back(pdf_info);
+#endif  // BUILDFLAG(ENABLE_PDF_VIEWER)
+}
+
+void ConvertStringWithSeparatorToVector(std::vector<std::string>* vec,
+                                        const char* separator,
+                                        const char* cmd_switch) {
+  auto* command_line = base::CommandLine::ForCurrentProcess();
+  auto string_with_separator = command_line->GetSwitchValueASCII(cmd_switch);
+  if (!string_with_separator.empty())
+    *vec = base::SplitString(string_with_separator, separator,
+                             base::TRIM_WHITESPACE, base::SPLIT_WANT_NONEMPTY);
+}
+
+}  // namespace
+
+AtomContentClient::AtomContentClient() {}
+
+AtomContentClient::~AtomContentClient() {}
+
+base::string16 AtomContentClient::GetLocalizedString(int message_id) const {
+  return l10n_util::GetStringUTF16(message_id);
+}
+
+base::StringPiece AtomContentClient::GetDataResource(
+    int resource_id,
+    ui::ScaleFactor scale_factor) const {
+  return ui::ResourceBundle::GetSharedInstance().GetRawDataResourceForScale(
+      resource_id, scale_factor);
+}
+
+gfx::Image& AtomContentClient::GetNativeImageNamed(int resource_id) const {
+  return ui::ResourceBundle::GetSharedInstance().GetNativeImageNamed(
+      resource_id);
+}
+
+base::RefCountedMemory* AtomContentClient::GetDataResourceBytes(
+    int resource_id) const {
+  return ui::ResourceBundle::GetSharedInstance().LoadDataResourceBytes(
+      resource_id);
+}
+
+void AtomContentClient::AddAdditionalSchemes(Schemes* schemes) {
+  std::vector<std::string> splited;
+  ConvertStringWithSeparatorToVector(&splited, ",",
+                                     switches::kServiceWorkerSchemes);
+  for (const std::string& scheme : splited)
+    schemes->service_worker_schemes.push_back(scheme);
+  schemes->service_worker_schemes.push_back(url::kFileScheme);
+
+  ConvertStringWithSeparatorToVector(&splited, ",", switches::kStandardSchemes);
+  for (const std::string& scheme : splited)
+    schemes->standard_schemes.push_back(scheme);
+  schemes->standard_schemes.push_back("chrome-extension");
+
+  ConvertStringWithSeparatorToVector(&splited, ",", switches::kSecureSchemes);
+  for (const std::string& scheme : splited)
+    schemes->secure_schemes.push_back(scheme);
+
+  ConvertStringWithSeparatorToVector(&splited, ",",
+                                     switches::kBypassCSPSchemes);
+  for (const std::string& scheme : splited)
+    schemes->csp_bypassing_schemes.push_back(scheme);
+
+  ConvertStringWithSeparatorToVector(&splited, ",", switches::kCORSSchemes);
+  for (const std::string& scheme : splited)
+    schemes->cors_enabled_schemes.push_back(scheme);
+}
+
+void AtomContentClient::AddPepperPlugins(
+    std::vector<content::PepperPluginInfo>* plugins) {
+#if BUILDFLAG(ENABLE_PEPPER_FLASH)
+  base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
+  AddPepperFlashFromCommandLine(command_line, plugins);
+#endif  // BUILDFLAG(ENABLE_PEPPER_FLASH)
+  ComputeBuiltInPlugins(plugins);
+}
+
+void AtomContentClient::AddContentDecryptionModules(
+    std::vector<content::CdmInfo>* cdms,
+    std::vector<media::CdmHostFilePath>* cdm_host_file_paths) {
+  if (cdms) {
+#if defined(WIDEVINE_CDM_AVAILABLE)
+    base::FilePath cdm_path;
+    std::vector<media::VideoCodec> video_codecs_supported;
+    base::flat_set<media::CdmSessionType> session_types_supported;
+    base::flat_set<media::EncryptionMode> encryption_modes_supported;
+    if (IsWidevineAvailable(&cdm_path, &video_codecs_supported,
+                            &session_types_supported,
+                            &encryption_modes_supported)) {
+      base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
+      auto cdm_version_string =
+          command_line->GetSwitchValueASCII(switches::kWidevineCdmVersion);
+      // CdmInfo needs |path| to be the actual Widevine library,
+      // not the adapter, so adjust as necessary. It will be in the
+      // same directory as the installed adapter.
+      const base::Version version(cdm_version_string);
+      DCHECK(version.IsValid());
+
+      content::CdmCapability capability(
+          video_codecs_supported, encryption_modes_supported,
+          session_types_supported, base::flat_set<media::CdmProxy::Protocol>());
+
+      cdms->push_back(content::CdmInfo(
+          kWidevineCdmDisplayName, kWidevineCdmGuid, version, cdm_path,
+          kWidevineCdmFileSystemId, capability, kWidevineKeySystem, false));
+    }
+#endif  // defined(WIDEVINE_CDM_AVAILABLE)
+  }
+}
+
+bool AtomContentClient::IsDataResourceGzipped(int resource_id) const {
+  return ui::ResourceBundle::GetSharedInstance().IsGzipped(resource_id);
+}
+
+}  // namespace atom

shell/app/atom_content_client.h

@@ -0,0 +1,42 @@
+// Copyright (c) 2014 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#ifndef ATOM_APP_ATOM_CONTENT_CLIENT_H_
+#define ATOM_APP_ATOM_CONTENT_CLIENT_H_
+
+#include <set>
+#include <string>
+#include <vector>
+
+#include "content/public/common/content_client.h"
+
+namespace atom {
+
+class AtomContentClient : public content::ContentClient {
+ public:
+  AtomContentClient();
+  ~AtomContentClient() override;
+
+ protected:
+  // content::ContentClient:
+  base::string16 GetLocalizedString(int message_id) const override;
+  base::StringPiece GetDataResource(int resource_id,
+                                    ui::ScaleFactor) const override;
+  gfx::Image& GetNativeImageNamed(int resource_id) const override;
+  base::RefCountedMemory* GetDataResourceBytes(int resource_id) const override;
+  void AddAdditionalSchemes(Schemes* schemes) override;
+  void AddPepperPlugins(
+      std::vector<content::PepperPluginInfo>* plugins) override;
+  void AddContentDecryptionModules(
+      std::vector<content::CdmInfo>* cdms,
+      std::vector<media::CdmHostFilePath>* cdm_host_file_paths) override;
+  bool IsDataResourceGzipped(int resource_id) const override;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(AtomContentClient);
+};
+
+}  // namespace atom
+
+#endif  // ATOM_APP_ATOM_CONTENT_CLIENT_H_

shell/app/atom_library_main.h

@@ -0,0 +1,23 @@
+// Copyright (c) 2013 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#ifndef ATOM_APP_ATOM_LIBRARY_MAIN_H_
+#define ATOM_APP_ATOM_LIBRARY_MAIN_H_
+
+#include "build/build_config.h"
+#include "electron/buildflags/buildflags.h"
+
+#if defined(OS_MACOSX)
+extern "C" {
+__attribute__((visibility("default"))) int AtomMain(int argc, char* argv[]);
+
+#if BUILDFLAG(ENABLE_RUN_AS_NODE)
+__attribute__((visibility("default"))) int AtomInitializeICUandStartNode(
+    int argc,
+    char* argv[]);
+#endif
+}
+#endif  // OS_MACOSX
+
+#endif  // ATOM_APP_ATOM_LIBRARY_MAIN_H_

shell/app/atom_library_main.mm

@@ -0,0 +1,38 @@
+// Copyright (c) 2013 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#include "atom/app/atom_library_main.h"
+
+#include "atom/app/atom_main_delegate.h"
+#include "atom/app/node_main.h"
+#include "atom/common/atom_command_line.h"
+#include "atom/common/mac/main_application_bundle.h"
+#include "base/at_exit.h"
+#include "base/i18n/icu_util.h"
+#include "base/mac/bundle_locations.h"
+#include "base/mac/scoped_nsautorelease_pool.h"
+#include "content/public/app/content_main.h"
+
+int AtomMain(int argc, char* argv[]) {
+  atom::AtomMainDelegate delegate;
+  content::ContentMainParams params(&delegate);
+  params.argc = argc;
+  params.argv = const_cast<const char**>(argv);
+  atom::AtomCommandLine::Init(argc, argv);
+  return content::ContentMain(params);
+}
+
+#if BUILDFLAG(ENABLE_RUN_AS_NODE)
+int AtomInitializeICUandStartNode(int argc, char* argv[]) {
+  base::AtExitManager atexit_manager;
+  base::mac::ScopedNSAutoreleasePool pool;
+  base::mac::SetOverrideFrameworkBundlePath(
+      atom::MainApplicationBundlePath()
+          .Append("Contents")
+          .Append("Frameworks")
+          .Append(ELECTRON_PRODUCT_NAME " Framework.framework"));
+  base::i18n::InitializeICU();
+  return atom::NodeMain(argc, argv);
+}
+#endif

shell/app/atom_login_helper.mm

@@ -0,0 +1,16 @@
+// Copyright (c) 2017 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#import <Cocoa/Cocoa.h>
+
+int main(int argc, char* argv[]) {
+  NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
+  NSArray* pathComponents = [[[NSBundle mainBundle] bundlePath] pathComponents];
+  pathComponents = [pathComponents
+      subarrayWithRange:NSMakeRange(0, [pathComponents count] - 4)];
+  NSString* path = [NSString pathWithComponents:pathComponents];
+  [[NSWorkspace sharedWorkspace] launchApplication:path];
+  [pool drain];
+  return 0;
+}

shell/app/atom_main.cc

@@ -0,0 +1,252 @@
+// Copyright (c) 2013 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#include "atom/app/atom_main.h"
+
+#include <algorithm>
+#include <cstdlib>
+#include <memory>
+#include <vector>
+
+#if defined(OS_WIN)
+#include <windows.h>  // windows.h must be included first
+
+#include <atlbase.h>  // ensures that ATL statics like `_AtlWinModule` are initialized (it's an issue in static debug build)
+#include <shellapi.h>
+#include <shellscalingapi.h>
+#include <tchar.h>
+
+#include "atom/app/atom_main_delegate.h"
+#include "atom/app/command_line_args.h"
+#include "atom/common/crash_reporter/win/crash_service_main.h"
+#include "base/environment.h"
+#include "base/process/launch.h"
+#include "base/strings/utf_string_conversions.h"
+#include "base/win/windows_version.h"
+#include "content/public/app/sandbox_helper_win.h"
+#include "sandbox/win/src/sandbox_types.h"
+#elif defined(OS_LINUX)  // defined(OS_WIN)
+#include <unistd.h>
+#include <cstdio>
+#include "atom/app/atom_main_delegate.h"  // NOLINT
+#include "content/public/app/content_main.h"
+#else  // defined(OS_LINUX)
+#include <mach-o/dyld.h>
+#include <unistd.h>
+#include <cstdio>
+#include "atom/app/atom_library_main.h"
+#endif  // defined(OS_MACOSX)
+
+#include "atom/app/node_main.h"
+#include "atom/common/atom_command_line.h"
+#include "atom/common/atom_constants.h"
+#include "base/at_exit.h"
+#include "base/i18n/icu_util.h"
+#include "electron/buildflags/buildflags.h"
+
+#if defined(HELPER_EXECUTABLE) && !defined(MAS_BUILD)
+#include "sandbox/mac/seatbelt_exec.h"  // nogncheck
+#endif
+
+namespace {
+
+ALLOW_UNUSED_TYPE bool IsEnvSet(const char* name) {
+#if defined(OS_WIN)
+  size_t required_size;
+  getenv_s(&required_size, nullptr, 0, name);
+  return required_size != 0;
+#else
+  char* indicator = getenv(name);
+  return indicator && indicator[0] != '\0';
+#endif
+}
+
+#if defined(OS_POSIX)
+void FixStdioStreams() {
+  // libuv may mark stdin/stdout/stderr as close-on-exec, which interferes
+  // with chromium's subprocess spawning. As a workaround, we detect if these
+  // streams are closed on startup, and reopen them as /dev/null if necessary.
+  // Otherwise, an unrelated file descriptor will be assigned as stdout/stderr
+  // which may cause various errors when attempting to write to them.
+  //
+  // For details see https://github.com/libuv/libuv/issues/2062
+  struct stat st;
+  if (fstat(STDIN_FILENO, &st) < 0 && errno == EBADF)
+    ignore_result(freopen("/dev/null", "r", stdin));
+  if (fstat(STDOUT_FILENO, &st) < 0 && errno == EBADF)
+    ignore_result(freopen("/dev/null", "w", stdout));
+  if (fstat(STDERR_FILENO, &st) < 0 && errno == EBADF)
+    ignore_result(freopen("/dev/null", "w", stderr));
+}
+#endif
+
+}  // namespace
+
+#if defined(OS_WIN)
+
+namespace crash_reporter {
+extern const char kCrashpadProcess[];
+}
+
+int APIENTRY wWinMain(HINSTANCE instance, HINSTANCE, wchar_t* cmd, int) {
+  struct Arguments {
+    int argc = 0;
+    wchar_t** argv = ::CommandLineToArgvW(::GetCommandLineW(), &argc);
+
+    ~Arguments() { LocalFree(argv); }
+  } arguments;
+
+  if (!arguments.argv)
+    return -1;
+
+#ifdef _DEBUG
+  // Don't display assert dialog boxes in CI test runs
+  static const char* kCI = "ELECTRON_CI";
+  bool is_ci = IsEnvSet(kCI);
+  if (!is_ci) {
+    for (int i = 0; i < arguments.argc; ++i) {
+      if (!_wcsicmp(arguments.argv[i], L"--ci")) {
+        is_ci = true;
+        _putenv_s(kCI, "1");  // set flag for child processes
+        break;
+      }
+    }
+  }
+  if (is_ci) {
+    _CrtSetReportMode(_CRT_ERROR, _CRTDBG_MODE_DEBUG | _CRTDBG_MODE_FILE);
+    _CrtSetReportFile(_CRT_ERROR, _CRTDBG_FILE_STDERR);
+
+    _CrtSetReportMode(_CRT_ASSERT, _CRTDBG_MODE_DEBUG | _CRTDBG_MODE_FILE);
+    _CrtSetReportFile(_CRT_ASSERT, _CRTDBG_FILE_STDERR);
+
+    _set_error_mode(_OUT_TO_STDERR);
+  }
+#endif
+
+#if BUILDFLAG(ENABLE_RUN_AS_NODE)
+  bool run_as_node = IsEnvSet(atom::kRunAsNode);
+#else
+  bool run_as_node = false;
+#endif
+
+  // Make sure the output is printed to console.
+  if (run_as_node || !IsEnvSet("ELECTRON_NO_ATTACH_CONSOLE"))
+    base::RouteStdioToConsole(false);
+
+#ifndef DEBUG
+  // Chromium has its own TLS subsystem which supports automatic destruction
+  // of thread-local data, and also depends on memory allocation routines
+  // provided by the CRT. The problem is that the auto-destruction mechanism
+  // uses a hidden feature of the OS loader which calls a callback on thread
+  // exit, but only after all loaded DLLs have been detached. Since the CRT is
+  // also a DLL, it happens that by the time Chromium's `OnThreadExit` function
+  // is called, the heap functions, though still in memory, no longer perform
+  // their duties, and when Chromium calls `free` on its buffer, it triggers
+  // an access violation error.
+  // We work around this problem by invoking Chromium's `OnThreadExit` in time
+  // from within the CRT's atexit facility, ensuring the heap functions are
+  // still active. The second invocation from the OS loader will be a no-op.
+  extern void NTAPI OnThreadExit(PVOID module, DWORD reason, PVOID reserved);
+  atexit([]() { OnThreadExit(nullptr, DLL_THREAD_DETACH, nullptr); });
+#endif
+
+  std::vector<char*> argv(arguments.argc);
+  std::transform(arguments.argv, arguments.argv + arguments.argc, argv.begin(),
+                 [](auto& a) { return _strdup(base::WideToUTF8(a).c_str()); });
+#if BUILDFLAG(ENABLE_RUN_AS_NODE)
+  if (run_as_node) {
+    base::AtExitManager atexit_manager;
+    base::i18n::InitializeICU();
+    auto ret = atom::NodeMain(argv.size(), argv.data());
+    std::for_each(argv.begin(), argv.end(), free);
+    return ret;
+  }
+#endif
+
+  base::CommandLine::Init(argv.size(), argv.data());
+  const base::CommandLine& cmd_line = *base::CommandLine::ForCurrentProcess();
+  if (cmd_line.GetSwitchValueASCII("type") ==
+      crash_reporter::kCrashpadProcess) {
+    return crash_service::Main(&argv);
+  }
+
+  if (!atom::CheckCommandLineArguments(arguments.argc, arguments.argv))
+    return -1;
+
+  sandbox::SandboxInterfaceInfo sandbox_info = {0};
+  content::InitializeSandboxInfo(&sandbox_info);
+  atom::AtomMainDelegate delegate;
+
+  content::ContentMainParams params(&delegate);
+  params.instance = instance;
+  params.sandbox_info = &sandbox_info;
+  atom::AtomCommandLine::Init(arguments.argc, arguments.argv);
+  return content::ContentMain(params);
+}
+
+#elif defined(OS_LINUX)  // defined(OS_WIN)
+
+int main(int argc, char* argv[]) {
+  FixStdioStreams();
+
+#if BUILDFLAG(ENABLE_RUN_AS_NODE)
+  if (IsEnvSet(atom::kRunAsNode)) {
+    base::i18n::InitializeICU();
+    base::AtExitManager atexit_manager;
+    return atom::NodeMain(argc, argv);
+  }
+#endif
+
+  atom::AtomMainDelegate delegate;
+  content::ContentMainParams params(&delegate);
+  params.argc = argc;
+  params.argv = const_cast<const char**>(argv);
+  atom::AtomCommandLine::Init(argc, argv);
+  return content::ContentMain(params);
+}
+
+#else  // defined(OS_LINUX)
+
+int main(int argc, char* argv[]) {
+  FixStdioStreams();
+
+#if BUILDFLAG(ENABLE_RUN_AS_NODE)
+  if (IsEnvSet(atom::kRunAsNode)) {
+    return AtomInitializeICUandStartNode(argc, argv);
+  }
+#endif
+
+#if defined(HELPER_EXECUTABLE) && !defined(MAS_BUILD)
+  uint32_t exec_path_size = 0;
+  int rv = _NSGetExecutablePath(NULL, &exec_path_size);
+  if (rv != -1) {
+    fprintf(stderr, "_NSGetExecutablePath: get length failed\n");
+    abort();
+  }
+
+  std::unique_ptr<char[]> exec_path(new char[exec_path_size]);
+  rv = _NSGetExecutablePath(exec_path.get(), &exec_path_size);
+  if (rv != 0) {
+    fprintf(stderr, "_NSGetExecutablePath: get path failed\n");
+    abort();
+  }
+  sandbox::SeatbeltExecServer::CreateFromArgumentsResult seatbelt =
+      sandbox::SeatbeltExecServer::CreateFromArguments(exec_path.get(), argc,
+                                                       argv);
+  if (seatbelt.sandbox_required) {
+    if (!seatbelt.server) {
+      fprintf(stderr, "Failed to create seatbelt sandbox server.\n");
+      abort();
+    }
+    if (!seatbelt.server->InitializeSandbox()) {
+      fprintf(stderr, "Failed to initialize sandbox.\n");
+      abort();
+    }
+  }
+#endif  // defined(HELPER_EXECUTABLE) && !defined(MAS_BUILD)
+
+  return AtomMain(argc, argv);
+}
+
+#endif  // defined(OS_MACOSX)

shell/app/atom_main.h

@@ -0,0 +1,10 @@
+// Copyright (c) 2013 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#ifndef ATOM_APP_ATOM_MAIN_H_
+#define ATOM_APP_ATOM_MAIN_H_
+
+#include "content/public/app/content_main.h"
+
+#endif  // ATOM_APP_ATOM_MAIN_H_

shell/app/atom_main_delegate.cc

@@ -0,0 +1,329 @@
+// Copyright (c) 2013 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#include "atom/app/atom_main_delegate.h"
+
+#include <iostream>
+#include <memory>
+#include <string>
+
+#if defined(OS_LINUX)
+#include <glib.h>  // for g_setenv()
+#endif
+
+#include "atom/app/atom_content_client.h"
+#include "atom/browser/atom_browser_client.h"
+#include "atom/browser/atom_gpu_client.h"
+#include "atom/browser/feature_list.h"
+#include "atom/browser/relauncher.h"
+#include "atom/common/options_switches.h"
+#include "atom/renderer/atom_renderer_client.h"
+#include "atom/renderer/atom_sandboxed_renderer_client.h"
+#include "atom/utility/atom_content_utility_client.h"
+#include "base/command_line.h"
+#include "base/debug/stack_trace.h"
+#include "base/environment.h"
+#include "base/logging.h"
+#include "base/mac/bundle_locations.h"
+#include "base/path_service.h"
+#include "chrome/common/chrome_paths.h"
+#include "content/public/common/content_switches.h"
+#include "electron/buildflags/buildflags.h"
+#include "ipc/ipc_buildflags.h"
+#include "services/service_manager/embedder/switches.h"
+#include "services/service_manager/sandbox/switches.h"
+#include "ui/base/l10n/l10n_util.h"
+#include "ui/base/resource/resource_bundle.h"
+#include "ui/base/ui_base_switches.h"
+
+#if defined(OS_MACOSX)
+#include "atom/app/atom_main_delegate_mac.h"
+#endif
+
+#if defined(OS_WIN)
+#include "base/win/win_util.h"
+#if defined(_WIN64)
+#include "atom/common/crash_reporter/crash_reporter_win.h"
+#endif
+#endif
+
+namespace atom {
+
+namespace {
+
+const char* kRelauncherProcess = "relauncher";
+
+bool IsBrowserProcess(base::CommandLine* cmd) {
+  std::string process_type = cmd->GetSwitchValueASCII(::switches::kProcessType);
+  return process_type.empty();
+}
+
+// Returns true if this subprocess type needs the ResourceBundle initialized
+// and resources loaded.
+bool SubprocessNeedsResourceBundle(const std::string& process_type) {
+  return
+#if defined(OS_POSIX) && !defined(OS_MACOSX)
+      // The zygote process opens the resources for the renderers.
+      process_type == service_manager::switches::kZygoteProcess ||
+#endif
+#if defined(OS_MACOSX)
+      // Mac needs them too for scrollbar related images and for sandbox
+      // profiles.
+      process_type == ::switches::kPpapiPluginProcess ||
+      process_type == ::switches::kPpapiBrokerProcess ||
+      process_type == ::switches::kGpuProcess ||
+#endif
+      process_type == ::switches::kRendererProcess ||
+      process_type == ::switches::kUtilityProcess;
+}
+
+#if defined(OS_WIN)
+void InvalidParameterHandler(const wchar_t*,
+                             const wchar_t*,
+                             const wchar_t*,
+                             unsigned int,
+                             uintptr_t) {
+  // noop.
+}
+#endif
+
+}  // namespace
+
+void LoadResourceBundle(const std::string& locale) {
+  const bool initialized = ui::ResourceBundle::HasSharedInstance();
+  if (initialized)
+    ui::ResourceBundle::CleanupSharedInstance();
+
+  // Load other resource files.
+  base::FilePath pak_dir;
+#if defined(OS_MACOSX)
+  pak_dir =
+      base::mac::FrameworkBundlePath().Append(FILE_PATH_LITERAL("Resources"));
+#else
+  base::PathService::Get(base::DIR_MODULE, &pak_dir);
+#endif
+
+  ui::ResourceBundle::InitSharedInstanceWithLocale(
+      locale, nullptr, ui::ResourceBundle::LOAD_COMMON_RESOURCES);
+  ui::ResourceBundle& bundle = ui::ResourceBundle::GetSharedInstance();
+  bundle.ReloadLocaleResources(locale);
+  bundle.AddDataPackFromPath(pak_dir.Append(FILE_PATH_LITERAL("resources.pak")),
+                             ui::SCALE_FACTOR_NONE);
+#if BUILDFLAG(ENABLE_PDF_VIEWER)
+  NOTIMPLEMENTED()
+      << "Hi, whoever's fixing PDF support! Thanks! The pdf "
+         "viewer resources haven't been ported over to the GN build yet, so "
+         "you'll probably need to change this bit of code.";
+  bundle.AddDataPackFromPath(
+      pak_dir.Append(FILE_PATH_LITERAL("pdf_viewer_resources.pak")),
+      ui::GetSupportedScaleFactors()[0]);
+#endif  // BUILDFLAG(ENABLE_PDF_VIEWER)
+}
+
+AtomMainDelegate::AtomMainDelegate() {}
+
+AtomMainDelegate::~AtomMainDelegate() {}
+
+bool AtomMainDelegate::BasicStartupComplete(int* exit_code) {
+  auto* command_line = base::CommandLine::ForCurrentProcess();
+
+  logging::LoggingSettings settings;
+#if defined(OS_WIN)
+#if defined(_WIN64)
+  crash_reporter::CrashReporterWin::SetUnhandledExceptionFilter();
+#endif
+
+  // On Windows the terminal returns immediately, so we add a new line to
+  // prevent output in the same line as the prompt.
+  if (IsBrowserProcess(command_line))
+    std::wcout << std::endl;
+#if defined(DEBUG)
+  // Print logging to debug.log on Windows
+  settings.logging_dest = logging::LOG_TO_ALL;
+  base::FilePath log_filename;
+  base::PathService::Get(base::DIR_EXE, &log_filename);
+  log_filename = log_filename.AppendASCII("debug.log");
+  settings.log_file = log_filename.value().c_str();
+  settings.lock_log = logging::LOCK_LOG_FILE;
+  settings.delete_old = logging::DELETE_OLD_LOG_FILE;
+#else
+  settings.logging_dest =
+      logging::LOG_TO_SYSTEM_DEBUG_LOG | logging::LOG_TO_STDERR;
+#endif  // defined(DEBUG)
+#else   // defined(OS_WIN)
+  settings.logging_dest =
+      logging::LOG_TO_SYSTEM_DEBUG_LOG | logging::LOG_TO_STDERR;
+#endif  // !defined(OS_WIN)
+
+  // Only enable logging when --enable-logging is specified.
+  auto env = base::Environment::Create();
+  if (!command_line->HasSwitch(::switches::kEnableLogging) &&
+      !env->HasVar("ELECTRON_ENABLE_LOGGING")) {
+    settings.logging_dest = logging::LOG_NONE;
+    logging::SetMinLogLevel(logging::LOG_NUM_SEVERITIES);
+  }
+
+  logging::InitLogging(settings);
+
+  // Logging with pid and timestamp.
+  logging::SetLogItems(true, false, true, false);
+
+  // Enable convient stack printing. This is enabled by default in non-official
+  // builds.
+  if (env->HasVar("ELECTRON_ENABLE_STACK_DUMPING"))
+    base::debug::EnableInProcessStackDumping();
+
+  if (env->HasVar("ELECTRON_DISABLE_SANDBOX"))
+    command_line->AppendSwitch(service_manager::switches::kNoSandbox);
+
+  chrome::RegisterPathProvider();
+
+#if defined(OS_MACOSX)
+  OverrideChildProcessPath();
+  OverrideFrameworkBundlePath();
+  SetUpBundleOverrides();
+#endif
+
+#if defined(OS_WIN)
+  // Ignore invalid parameter errors.
+  _set_invalid_parameter_handler(InvalidParameterHandler);
+  // Disable the ActiveVerifier, which is used by Chrome to track possible
+  // bugs, but no use in Electron.
+  base::win::DisableHandleVerifier();
+
+  if (IsBrowserProcess(command_line))
+    base::win::PinUser32();
+#endif
+
+  content_client_ = std::make_unique<AtomContentClient>();
+  SetContentClient(content_client_.get());
+
+  return false;
+}
+
+void AtomMainDelegate::PostEarlyInitialization(bool is_running_tests) {
+  std::string custom_locale;
+  ui::ResourceBundle::InitSharedInstanceWithLocale(
+      custom_locale, nullptr, ui::ResourceBundle::LOAD_COMMON_RESOURCES);
+  auto* cmd_line = base::CommandLine::ForCurrentProcess();
+  if (cmd_line->HasSwitch(::switches::kLang)) {
+    const std::string locale = cmd_line->GetSwitchValueASCII(::switches::kLang);
+    const base::FilePath locale_file_path =
+        ui::ResourceBundle::GetSharedInstance().GetLocaleFilePath(locale, true);
+    if (!locale_file_path.empty()) {
+      custom_locale = locale;
+#if defined(OS_LINUX)
+      /* When built with USE_GLIB, libcc's GetApplicationLocaleInternal() uses
+       * glib's g_get_language_names(), which keys off of getenv("LC_ALL") */
+      g_setenv("LC_ALL", custom_locale.c_str(), TRUE);
+#endif
+    }
+  }
+
+#if defined(OS_MACOSX)
+  if (custom_locale.empty())
+    l10n_util::OverrideLocaleWithCocoaLocale();
+#endif
+
+  LoadResourceBundle(custom_locale);
+
+  AtomBrowserClient::SetApplicationLocale(
+      l10n_util::GetApplicationLocale(custom_locale));
+}
+
+void AtomMainDelegate::PreSandboxStartup() {
+  auto* command_line = base::CommandLine::ForCurrentProcess();
+
+  std::string process_type =
+      command_line->GetSwitchValueASCII(::switches::kProcessType);
+
+  // Initialize ResourceBundle which handles files loaded from external
+  // sources. The language should have been passed in to us from the
+  // browser process as a command line flag.
+  if (SubprocessNeedsResourceBundle(process_type)) {
+    std::string locale = command_line->GetSwitchValueASCII(::switches::kLang);
+    LoadResourceBundle(locale);
+  }
+
+  // Only append arguments for browser process.
+  if (!IsBrowserProcess(command_line))
+    return;
+
+  // Allow file:// URIs to read other file:// URIs by default.
+  command_line->AppendSwitch(::switches::kAllowFileAccessFromFiles);
+
+#if defined(OS_MACOSX)
+  // Enable AVFoundation.
+  command_line->AppendSwitch("enable-avfoundation");
+#endif
+}
+
+void AtomMainDelegate::PreCreateMainMessageLoop() {
+  // This is initialized early because the service manager reads some feature
+  // flags and we need to make sure the feature list is initialized before the
+  // service manager reads the features.
+  InitializeFeatureList();
+#if defined(OS_MACOSX)
+  RegisterAtomCrApp();
+#endif
+}
+
+content::ContentBrowserClient* AtomMainDelegate::CreateContentBrowserClient() {
+  browser_client_.reset(new AtomBrowserClient);
+  return browser_client_.get();
+}
+
+content::ContentGpuClient* AtomMainDelegate::CreateContentGpuClient() {
+  gpu_client_.reset(new AtomGpuClient);
+  return gpu_client_.get();
+}
+
+content::ContentRendererClient*
+AtomMainDelegate::CreateContentRendererClient() {
+  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kEnableSandbox) ||
+      !base::CommandLine::ForCurrentProcess()->HasSwitch(
+          service_manager::switches::kNoSandbox)) {
+    renderer_client_.reset(new AtomSandboxedRendererClient);
+  } else {
+    renderer_client_.reset(new AtomRendererClient);
+  }
+
+  return renderer_client_.get();
+}
+
+content::ContentUtilityClient* AtomMainDelegate::CreateContentUtilityClient() {
+  utility_client_.reset(new AtomContentUtilityClient);
+  return utility_client_.get();
+}
+
+int AtomMainDelegate::RunProcess(
+    const std::string& process_type,
+    const content::MainFunctionParams& main_function_params) {
+  if (process_type == kRelauncherProcess)
+    return relauncher::RelauncherMain(main_function_params);
+  else
+    return -1;
+}
+
+#if defined(OS_MACOSX)
+bool AtomMainDelegate::ShouldSendMachPort(const std::string& process_type) {
+  return process_type != kRelauncherProcess;
+}
+
+bool AtomMainDelegate::DelaySandboxInitialization(
+    const std::string& process_type) {
+  return process_type == kRelauncherProcess;
+}
+#endif
+
+bool AtomMainDelegate::ShouldLockSchemeRegistry() {
+  return false;
+}
+
+bool AtomMainDelegate::ShouldCreateFeatureList() {
+  return false;
+}
+
+}  // namespace atom

shell/app/atom_main_delegate.h

@@ -0,0 +1,61 @@
+// Copyright (c) 2013 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#ifndef ATOM_APP_ATOM_MAIN_DELEGATE_H_
+#define ATOM_APP_ATOM_MAIN_DELEGATE_H_
+
+#include <memory>
+#include <string>
+
+#include "content/public/app/content_main_delegate.h"
+#include "content/public/common/content_client.h"
+
+namespace atom {
+
+void LoadResourceBundle(const std::string& locale);
+
+class AtomMainDelegate : public content::ContentMainDelegate {
+ public:
+  AtomMainDelegate();
+  ~AtomMainDelegate() override;
+
+ protected:
+  // content::ContentMainDelegate:
+  bool BasicStartupComplete(int* exit_code) override;
+  void PreSandboxStartup() override;
+  void PreCreateMainMessageLoop() override;
+  void PostEarlyInitialization(bool is_running_tests) override;
+  content::ContentBrowserClient* CreateContentBrowserClient() override;
+  content::ContentGpuClient* CreateContentGpuClient() override;
+  content::ContentRendererClient* CreateContentRendererClient() override;
+  content::ContentUtilityClient* CreateContentUtilityClient() override;
+  int RunProcess(
+      const std::string& process_type,
+      const content::MainFunctionParams& main_function_params) override;
+#if defined(OS_MACOSX)
+  bool ShouldSendMachPort(const std::string& process_type) override;
+  bool DelaySandboxInitialization(const std::string& process_type) override;
+#endif
+  bool ShouldLockSchemeRegistry() override;
+  bool ShouldCreateFeatureList() override;
+
+ private:
+#if defined(OS_MACOSX)
+  void OverrideChildProcessPath();
+  void OverrideFrameworkBundlePath();
+  void SetUpBundleOverrides();
+#endif
+
+  std::unique_ptr<content::ContentBrowserClient> browser_client_;
+  std::unique_ptr<content::ContentClient> content_client_;
+  std::unique_ptr<content::ContentGpuClient> gpu_client_;
+  std::unique_ptr<content::ContentRendererClient> renderer_client_;
+  std::unique_ptr<content::ContentUtilityClient> utility_client_;
+
+  DISALLOW_COPY_AND_ASSIGN(AtomMainDelegate);
+};
+
+}  // namespace atom
+
+#endif  // ATOM_APP_ATOM_MAIN_DELEGATE_H_

shell/app/atom_main_delegate_mac.h

@@ -0,0 +1,15 @@
+// Copyright 2013 Slack Technologies, Inc. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef ATOM_APP_ATOM_MAIN_DELEGATE_MAC_H_
+#define ATOM_APP_ATOM_MAIN_DELEGATE_MAC_H_
+
+namespace atom {
+
+// Initializes NSApplication.
+void RegisterAtomCrApp();
+
+}  // namespace atom
+
+#endif  // ATOM_APP_ATOM_MAIN_DELEGATE_MAC_H_

shell/app/atom_main_delegate_mac.mm

@@ -0,0 +1,71 @@
+// Copyright (c) 2014 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#include "atom/app/atom_main_delegate.h"
+
+#include <string>
+
+#include "atom/browser/mac/atom_application.h"
+#include "atom/common/application_info.h"
+#include "atom/common/mac/main_application_bundle.h"
+#include "base/files/file_path.h"
+#include "base/files/file_util.h"
+#include "base/mac/bundle_locations.h"
+#include "base/mac/foundation_util.h"
+#include "base/mac/scoped_nsautorelease_pool.h"
+#include "base/path_service.h"
+#include "base/strings/sys_string_conversions.h"
+#include "content/public/common/content_paths.h"
+
+namespace atom {
+
+namespace {
+
+base::FilePath GetFrameworksPath() {
+  return MainApplicationBundlePath().Append("Contents").Append("Frameworks");
+}
+
+base::FilePath GetHelperAppPath(const base::FilePath& frameworks_path,
+                                const std::string& name) {
+  return frameworks_path.Append(name + " Helper.app")
+      .Append("Contents")
+      .Append("MacOS")
+      .Append(name + " Helper");
+}
+
+}  // namespace
+
+void AtomMainDelegate::OverrideFrameworkBundlePath() {
+  base::mac::SetOverrideFrameworkBundlePath(
+      GetFrameworksPath().Append(ELECTRON_PRODUCT_NAME " Framework.framework"));
+}
+
+void AtomMainDelegate::OverrideChildProcessPath() {
+  base::FilePath frameworks_path = GetFrameworksPath();
+  base::FilePath helper_path =
+      GetHelperAppPath(frameworks_path, ELECTRON_PRODUCT_NAME);
+  if (!base::PathExists(helper_path))
+    helper_path = GetHelperAppPath(frameworks_path, GetApplicationName());
+  if (!base::PathExists(helper_path))
+    LOG(FATAL) << "Unable to find helper app";
+  base::PathService::Override(content::CHILD_PROCESS_EXE, helper_path);
+}
+
+void AtomMainDelegate::SetUpBundleOverrides() {
+  base::mac::ScopedNSAutoreleasePool pool;
+  NSBundle* bundle = MainApplicationBundle();
+  std::string base_bundle_id =
+      base::SysNSStringToUTF8([bundle bundleIdentifier]);
+  NSString* team_id = [bundle objectForInfoDictionaryKey:@"ElectronTeamID"];
+  if (team_id)
+    base_bundle_id = base::SysNSStringToUTF8(team_id) + "." + base_bundle_id;
+  base::mac::SetBaseBundleID(base_bundle_id.c_str());
+}
+
+void RegisterAtomCrApp() {
+  // Force the NSApplication subclass to be used.
+  [AtomApplication sharedApplication];
+}
+
+}  // namespace atom

shell/app/command_line_args.cc

@@ -0,0 +1,53 @@
+// Copyright (c) 2018 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#include "atom/app/command_line_args.h"
+
+namespace {
+
+bool IsUrlArg(const base::CommandLine::CharType* arg) {
+  // the first character must be a letter for this to be a URL
+  auto c = *arg;
+  if (('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z')) {
+    for (auto* p = arg + 1; *p; ++p) {
+      c = *p;
+
+      // colon indicates that the argument starts with a URI scheme
+      if (c == ':') {
+        // it could also be a Windows filesystem path
+        if (p == arg + 1)
+          break;
+
+        return true;
+      }
+
+      // white-space before a colon means it's not a URL
+      if (c == ' ' || (0x9 <= c && c <= 0xD))
+        break;
+    }
+  }
+
+  return false;
+}
+
+}  // namespace
+
+namespace atom {
+
+bool CheckCommandLineArguments(int argc, base::CommandLine::CharType** argv) {
+  const base::CommandLine::StringType dashdash(2, '-');
+  bool block_args = false;
+  for (int i = 0; i < argc; ++i) {
+    if (argv[i] == dashdash)
+      break;
+    if (block_args) {
+      return false;
+    } else if (IsUrlArg(argv[i])) {
+      block_args = true;
+    }
+  }
+  return true;
+}
+
+}  // namespace atom

shell/app/command_line_args.h

@@ -0,0 +1,16 @@
+// Copyright (c) 2018 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#ifndef ATOM_APP_COMMAND_LINE_ARGS_H_
+#define ATOM_APP_COMMAND_LINE_ARGS_H_
+
+#include "base/command_line.h"
+
+namespace atom {
+
+bool CheckCommandLineArguments(int argc, base::CommandLine::CharType** argv);
+
+}  // namespace atom
+
+#endif  // ATOM_APP_COMMAND_LINE_ARGS_H_

shell/app/manifests.cc

@@ -0,0 +1,65 @@
+// Copyright (c) 2019 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#include "atom/app/manifests.h"
+
+#include "base/no_destructor.h"
+#include "electron/atom/common/api/api.mojom.h"
+#include "printing/buildflags/buildflags.h"
+#include "services/proxy_resolver/public/cpp/manifest.h"
+#include "services/service_manager/public/cpp/manifest_builder.h"
+
+#if BUILDFLAG(ENABLE_PRINTING)
+#include "components/services/pdf_compositor/public/cpp/manifest.h"
+#endif
+
+#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
+#include "chrome/services/printing/public/cpp/manifest.h"
+#endif
+
+namespace {
+
+// TODO(https://crbug.com/781334): Remove these helpers and just update the
+// manifest definitions to be marked out-of-process. This is here only to avoid
+// extra churn when transitioning away from content_packaged_services.
+service_manager::Manifest MakeOutOfProcess(
+    const service_manager::Manifest& manifest) {
+  // cpplint.py emits a false positive [build/include_what_you_use]
+  service_manager::Manifest copy(manifest);  // NOLINT
+  copy.options.execution_mode =
+      service_manager::Manifest::ExecutionMode::kOutOfProcessBuiltin;
+  return copy;
+}
+
+}  // namespace
+
+const service_manager::Manifest& GetElectronContentBrowserOverlayManifest() {
+  static base::NoDestructor<service_manager::Manifest> manifest{
+      service_manager::ManifestBuilder()
+          .WithDisplayName("Electron (browser process)")
+          .RequireCapability("device", "device:geolocation_control")
+          .RequireCapability("proxy_resolver", "factory")
+          .RequireCapability("chrome_printing", "converter")
+          .RequireCapability("pdf_compositor", "compositor")
+          .ExposeInterfaceFilterCapability_Deprecated(
+              "navigation:frame", "renderer",
+              service_manager::Manifest::InterfaceList<
+                  atom::mojom::ElectronBrowser>())
+          .Build()};
+  return *manifest;
+}
+
+const std::vector<service_manager::Manifest>&
+GetElectronBuiltinServiceManifests() {
+  static base::NoDestructor<std::vector<service_manager::Manifest>> manifests{{
+      MakeOutOfProcess(proxy_resolver::GetManifest()),
+#if BUILDFLAG(ENABLE_PRINTING)
+      MakeOutOfProcess(printing::GetPdfCompositorManifest()),
+#endif
+#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
+      MakeOutOfProcess(GetChromePrintingManifest()),
+#endif
+  }};
+  return *manifests;
+}

shell/app/manifests.h

@@ -0,0 +1,16 @@
+// Copyright (c) 2019 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#ifndef ATOM_APP_MANIFESTS_H_
+#define ATOM_APP_MANIFESTS_H_
+
+#include <vector>
+
+#include "services/service_manager/public/cpp/manifest.h"
+
+const service_manager::Manifest& GetElectronContentBrowserOverlayManifest();
+const std::vector<service_manager::Manifest>&
+GetElectronBuiltinServiceManifests();
+
+#endif  // ATOM_APP_MANIFESTS_H_

shell/app/node_main.cc

@@ -0,0 +1,133 @@
+// Copyright (c) 2015 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#include "atom/app/node_main.h"
+
+#include <memory>
+#include <utility>
+
+#include "atom/app/uv_task_runner.h"
+#include "atom/browser/javascript_environment.h"
+#include "atom/browser/node_debugger.h"
+#include "atom/common/api/electron_bindings.h"
+#include "atom/common/crash_reporter/crash_reporter.h"
+#include "atom/common/native_mate_converters/string16_converter.h"
+#include "atom/common/node_bindings.h"
+#include "atom/common/node_includes.h"
+#include "base/command_line.h"
+#include "base/feature_list.h"
+#include "base/task/thread_pool/thread_pool.h"
+#include "base/threading/thread_task_runner_handle.h"
+#include "electron/electron_version.h"
+#include "gin/array_buffer.h"
+#include "gin/public/isolate_holder.h"
+#include "gin/v8_initializer.h"
+#include "native_mate/dictionary.h"
+
+#if defined(_WIN64)
+#include "atom/common/crash_reporter/crash_reporter_win.h"
+#endif
+
+namespace atom {
+
+int NodeMain(int argc, char* argv[]) {
+  base::CommandLine::Init(argc, argv);
+
+  int exit_code = 1;
+  {
+    // Feed gin::PerIsolateData with a task runner.
+    argv = uv_setup_args(argc, argv);
+    uv_loop_t* loop = uv_default_loop();
+    scoped_refptr<UvTaskRunner> uv_task_runner(new UvTaskRunner(loop));
+    base::ThreadTaskRunnerHandle handle(uv_task_runner);
+
+    // Initialize feature list.
+    auto feature_list = std::make_unique<base::FeatureList>();
+    feature_list->InitializeFromCommandLine("", "");
+    base::FeatureList::SetInstance(std::move(feature_list));
+
+    gin::V8Initializer::LoadV8Snapshot(
+        gin::V8Initializer::V8SnapshotFileType::kWithAdditionalContext);
+    gin::V8Initializer::LoadV8Natives();
+
+    // V8 requires a task scheduler apparently
+    base::ThreadPoolInstance::CreateAndStartWithDefaultParams("Electron");
+
+    // Initialize gin::IsolateHolder.
+    JavascriptEnvironment gin_env(loop);
+#if defined(_WIN64)
+    crash_reporter::CrashReporterWin::SetUnhandledExceptionFilter();
+#endif
+
+    // Explicitly register electron's builtin modules.
+    NodeBindings::RegisterBuiltinModules();
+
+    int exec_argc;
+    const char** exec_argv;
+    node::Init(&argc, const_cast<const char**>(argv), &exec_argc, &exec_argv);
+
+    node::Environment* env = node::CreateEnvironment(
+        node::CreateIsolateData(gin_env.isolate(), loop, gin_env.platform()),
+        gin_env.context(), argc, argv, exec_argc, exec_argv);
+
+    // Enable support for v8 inspector.
+    NodeDebugger node_debugger(env);
+    node_debugger.Start();
+
+    mate::Dictionary process(gin_env.isolate(), env->process_object());
+#if defined(OS_WIN)
+    process.SetMethod("log", &ElectronBindings::Log);
+#endif
+    process.SetMethod("crash", &ElectronBindings::Crash);
+
+    // Setup process.crashReporter.start in child node processes
+    auto reporter = mate::Dictionary::CreateEmpty(gin_env.isolate());
+    reporter.SetMethod("start", &crash_reporter::CrashReporter::StartInstance);
+    process.Set("crashReporter", reporter);
+
+    mate::Dictionary versions;
+    if (process.Get("versions", &versions)) {
+      versions.SetReadOnly(ELECTRON_PROJECT_NAME, ELECTRON_VERSION_STRING);
+    }
+
+    node::LoadEnvironment(env);
+
+    bool more;
+    do {
+      more = uv_run(env->event_loop(), UV_RUN_ONCE);
+      gin_env.platform()->DrainTasks(env->isolate());
+      if (more == false) {
+        node::EmitBeforeExit(env);
+
+        // Emit `beforeExit` if the loop became alive either after emitting
+        // event, or after running some callbacks.
+        more = uv_loop_alive(env->event_loop());
+        if (uv_run(env->event_loop(), UV_RUN_NOWAIT) != 0)
+          more = true;
+      }
+    } while (more == true);
+
+    node_debugger.Stop();
+    exit_code = node::EmitExit(env);
+    node::RunAtExit(env);
+    gin_env.platform()->DrainTasks(env->isolate());
+    gin_env.platform()->CancelPendingDelayedTasks(env->isolate());
+    gin_env.platform()->UnregisterIsolate(env->isolate());
+
+    node::FreeEnvironment(env);
+  }
+
+  // According to "src/gin/shell/gin_main.cc":
+  //
+  // gin::IsolateHolder waits for tasks running in ThreadPool in its
+  // destructor and thus must be destroyed before ThreadPool starts skipping
+  // CONTINUE_ON_SHUTDOWN tasks.
+  base::ThreadPoolInstance::Get()->Shutdown();
+
+  v8::V8::Dispose();
+
+  return exit_code;
+}
+
+}  // namespace atom

shell/app/node_main.h

@@ -0,0 +1,14 @@
+// Copyright (c) 2015 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#ifndef ATOM_APP_NODE_MAIN_H_
+#define ATOM_APP_NODE_MAIN_H_
+
+namespace atom {
+
+int NodeMain(int argc, char* argv[]);
+
+}  // namespace atom
+
+#endif  // ATOM_APP_NODE_MAIN_H_

shell/app/resources/mac/loginhelper-Info.plist

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleIdentifier</key>
+	<string>${ELECTRON_BUNDLE_ID}</string>
+	<key>CFBundleName</key>
+	<string>${PRODUCT_NAME}</string>
+	<key>CFBundleExecutable</key>
+	<string>${PRODUCT_NAME}</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>LSBackgroundOnly</key>
+	<true/>
+</dict>
+</plist>

shell/app/uv_task_runner.cc

@@ -0,0 +1,60 @@
+// Copyright (c) 2015 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#include <utility>
+
+#include "atom/app/uv_task_runner.h"
+
+#include "base/stl_util.h"
+
+namespace atom {
+
+UvTaskRunner::UvTaskRunner(uv_loop_t* loop) : loop_(loop) {}
+
+UvTaskRunner::~UvTaskRunner() {
+  for (auto& iter : tasks_) {
+    uv_unref(reinterpret_cast<uv_handle_t*>(iter.first));
+    delete iter.first;
+  }
+}
+
+bool UvTaskRunner::PostDelayedTask(const base::Location& from_here,
+                                   base::OnceClosure task,
+                                   base::TimeDelta delay) {
+  auto* timer = new uv_timer_t;
+  timer->data = this;
+  uv_timer_init(loop_, timer);
+  uv_timer_start(timer, UvTaskRunner::OnTimeout, delay.InMilliseconds(), 0);
+  tasks_[timer] = std::move(task);
+  return true;
+}
+
+bool UvTaskRunner::RunsTasksInCurrentSequence() const {
+  return true;
+}
+
+bool UvTaskRunner::PostNonNestableDelayedTask(const base::Location& from_here,
+                                              base::OnceClosure task,
+                                              base::TimeDelta delay) {
+  return PostDelayedTask(from_here, std::move(task), delay);
+}
+
+// static
+void UvTaskRunner::OnTimeout(uv_timer_t* timer) {
+  UvTaskRunner* self = static_cast<UvTaskRunner*>(timer->data);
+  if (!ContainsKey(self->tasks_, timer))
+    return;
+
+  std::move(self->tasks_[timer]).Run();
+  self->tasks_.erase(timer);
+  uv_timer_stop(timer);
+  uv_close(reinterpret_cast<uv_handle_t*>(timer), UvTaskRunner::OnClose);
+}
+
+// static
+void UvTaskRunner::OnClose(uv_handle_t* handle) {
+  delete reinterpret_cast<uv_timer_t*>(handle);
+}
+
+}  // namespace atom

shell/app/uv_task_runner.h

@@ -0,0 +1,45 @@
+// Copyright (c) 2015 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#ifndef ATOM_APP_UV_TASK_RUNNER_H_
+#define ATOM_APP_UV_TASK_RUNNER_H_
+
+#include <map>
+
+#include "base/callback.h"
+#include "base/location.h"
+#include "base/single_thread_task_runner.h"
+#include "uv.h"  // NOLINT(build/include)
+
+namespace atom {
+
+// TaskRunner implementation that posts tasks into libuv's default loop.
+class UvTaskRunner : public base::SingleThreadTaskRunner {
+ public:
+  explicit UvTaskRunner(uv_loop_t* loop);
+
+  // base::SingleThreadTaskRunner:
+  bool PostDelayedTask(const base::Location& from_here,
+                       base::OnceClosure task,
+                       base::TimeDelta delay) override;
+  bool RunsTasksInCurrentSequence() const override;
+  bool PostNonNestableDelayedTask(const base::Location& from_here,
+                                  base::OnceClosure task,
+                                  base::TimeDelta delay) override;
+
+ private:
+  ~UvTaskRunner() override;
+  static void OnTimeout(uv_timer_t* timer);
+  static void OnClose(uv_handle_t* handle);
+
+  uv_loop_t* loop_;
+
+  std::map<uv_timer_t*, base::OnceClosure> tasks_;
+
+  DISALLOW_COPY_AND_ASSIGN(UvTaskRunner);
+};
+
+}  // namespace atom
+
+#endif  // ATOM_APP_UV_TASK_RUNNER_H_