diff --git a/atom.gyp b/atom.gyp
index 42069ea846..b3c9e117a5 100644
--- a/atom.gyp
+++ b/atom.gyp
@@ -4,7 +4,7 @@
     'product_name%': 'Electron',
     'company_name%': 'GitHub, Inc',
     'company_abbr%': 'github',
-    'version%': '0.33.3',
+    'version%': '0.33.4',
   },
   'includes': [
     'filenames.gypi',
diff --git a/atom/browser/api/atom_api_web_contents.cc b/atom/browser/api/atom_api_web_contents.cc
index bdeb4ed4f8..f6433ca635 100644
--- a/atom/browser/api/atom_api_web_contents.cc
+++ b/atom/browser/api/atom_api_web_contents.cc
@@ -7,6 +7,7 @@
 #include <set>
 
 #include "atom/browser/api/atom_api_session.h"
+#include "atom/browser/api/atom_api_window.h"
 #include "atom/browser/atom_browser_client.h"
 #include "atom/browser/atom_browser_context.h"
 #include "atom/browser/atom_browser_main_parts.h"
@@ -26,6 +27,7 @@
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "brightray/browser/inspectable_web_contents.h"
+#include "brightray/browser/inspectable_web_contents_view.h"
 #include "chrome/browser/printing/print_view_manager_basic.h"
 #include "chrome/browser/printing/print_preview_message_handler.h"
 #include "content/common/view_messages.h"
@@ -228,6 +230,8 @@ WebContents::WebContents(v8::Isolate* isolate,
   AttachAsUserData(web_contents);
   InitWithWebContents(web_contents);
 
+  managed_web_contents()->GetView()->SetDelegate(this);
+
   // Save the preferences in C++.
   base::DictionaryValue web_preferences;
   mate::ConvertFromV8(isolate, options.GetHandle(), &web_preferences);
@@ -491,6 +495,33 @@ void WebContents::DidUpdateFaviconURL(
   Emit("page-favicon-updated", unique_urls);
 }
 
+void WebContents::DevToolsFocused() {
+  Emit("devtools-focused");
+}
+
+void WebContents::DevToolsOpened() {
+  v8::Locker locker(isolate());
+  v8::HandleScope handle_scope(isolate());
+  auto handle = WebContents::CreateFrom(
+      isolate(), managed_web_contents()->GetDevToolsWebContents());
+  devtools_web_contents_.Reset(isolate(), handle.ToV8());
+
+  // Inherit owner window in devtools.
+  if (owner_window())
+    handle->SetOwnerWindow(managed_web_contents()->GetDevToolsWebContents(),
+                           owner_window());
+
+  Emit("devtools-opened");
+}
+
+void WebContents::DevToolsClosed() {
+  v8::Locker locker(isolate());
+  v8::HandleScope handle_scope(isolate());
+  devtools_web_contents_.Reset();
+
+  Emit("devtools-closed");
+}
+
 bool WebContents::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(WebContents, message)
@@ -698,10 +729,6 @@ void WebContents::InspectServiceWorker() {
   }
 }
 
-v8::Local<v8::Value> WebContents::Session(v8::Isolate* isolate) {
-  return v8::Local<v8::Value>::New(isolate, session_);
-}
-
 void WebContents::HasServiceWorker(
     const base::Callback<void(bool)>& callback) {
   auto context = GetServiceWorkerContext(web_contents());
@@ -893,6 +920,24 @@ v8::Local<v8::Value> WebContents::GetWebPreferences(v8::Isolate* isolate) {
   return mate::ConvertToV8(isolate, *web_preferences->web_preferences());
 }
 
+v8::Local<v8::Value> WebContents::GetOwnerBrowserWindow() {
+  if (owner_window())
+    return Window::From(isolate(), owner_window());
+  else
+    return v8::Null(isolate());
+}
+
+v8::Local<v8::Value> WebContents::Session(v8::Isolate* isolate) {
+  return v8::Local<v8::Value>::New(isolate, session_);
+}
+
+v8::Local<v8::Value> WebContents::DevToolsWebContents(v8::Isolate* isolate) {
+  if (devtools_web_contents_.IsEmpty())
+    return v8::Null(isolate);
+  else
+    return v8::Local<v8::Value>::New(isolate, devtools_web_contents_);
+}
+
 mate::ObjectTemplateBuilder WebContents::GetObjectTemplateBuilder(
     v8::Isolate* isolate) {
   if (template_.IsEmpty())
@@ -949,6 +994,7 @@ mate::ObjectTemplateBuilder WebContents::GetObjectTemplateBuilder(
         .SetMethod("setAllowTransparency", &WebContents::SetAllowTransparency)
         .SetMethod("isGuest", &WebContents::IsGuest)
         .SetMethod("getWebPreferences", &WebContents::GetWebPreferences)
+        .SetMethod("getOwnerBrowserWindow", &WebContents::GetOwnerBrowserWindow)
         .SetMethod("hasServiceWorker", &WebContents::HasServiceWorker)
         .SetMethod("unregisterServiceWorker",
                    &WebContents::UnregisterServiceWorker)
@@ -957,7 +1003,9 @@ mate::ObjectTemplateBuilder WebContents::GetObjectTemplateBuilder(
         .SetMethod("_printToPDF", &WebContents::PrintToPDF)
         .SetMethod("addWorkSpace", &WebContents::AddWorkSpace)
         .SetMethod("removeWorkSpace", &WebContents::RemoveWorkSpace)
-        .SetProperty("session", &WebContents::Session)
+        .SetProperty("session", &WebContents::Session, true)
+        .SetProperty("devToolsWebContents",
+                     &WebContents::DevToolsWebContents, true)
         .Build());
 
   return mate::ObjectTemplateBuilder(
diff --git a/atom/browser/api/atom_api_web_contents.h b/atom/browser/api/atom_api_web_contents.h
index 91750ac613..bbf331848c 100644
--- a/atom/browser/api/atom_api_web_contents.h
+++ b/atom/browser/api/atom_api_web_contents.h
@@ -83,7 +83,6 @@ class WebContents : public mate::TrackableObject<WebContents>,
   void DisableDeviceEmulation();
   void InspectElement(int x, int y);
   void InspectServiceWorker();
-  v8::Local<v8::Value> Session(v8::Isolate* isolate);
   void HasServiceWorker(const base::Callback<void(bool)>&);
   void UnregisterServiceWorker(const base::Callback<void(bool)>&);
   void SetAudioMuted(bool muted);
@@ -135,6 +134,13 @@ class WebContents : public mate::TrackableObject<WebContents>,
   // Returns the web preferences of current WebContents.
   v8::Local<v8::Value> GetWebPreferences(v8::Isolate* isolate);
 
+  // Returns the owner window.
+  v8::Local<v8::Value> GetOwnerBrowserWindow();
+
+  // Properties.
+  v8::Local<v8::Value> Session(v8::Isolate* isolate);
+  v8::Local<v8::Value> DevToolsWebContents(v8::Isolate* isolate);
+
  protected:
   explicit WebContents(content::WebContents* web_contents);
   WebContents(v8::Isolate* isolate, const mate::Dictionary& options);
@@ -218,6 +224,11 @@ class WebContents : public mate::TrackableObject<WebContents>,
   void PluginCrashed(const base::FilePath& plugin_path,
                      base::ProcessId plugin_pid) override;
 
+  // brightray::InspectableWebContentsViewDelegate:
+  void DevToolsFocused() override;
+  void DevToolsOpened() override;
+  void DevToolsClosed() override;
+
  private:
   enum Type {
     BROWSER_WINDOW,  // Used by BrowserWindow.
@@ -237,6 +248,7 @@ class WebContents : public mate::TrackableObject<WebContents>,
                              IPC::Message* message);
 
   v8::Global<v8::Value> session_;
+  v8::Global<v8::Value> devtools_web_contents_;
 
   scoped_ptr<WebViewGuestDelegate> guest_delegate_;
 
diff --git a/atom/browser/api/atom_api_window.cc b/atom/browser/api/atom_api_window.cc
index 4d866d1850..c4beaace67 100644
--- a/atom/browser/api/atom_api_window.cc
+++ b/atom/browser/api/atom_api_window.cc
@@ -92,6 +92,7 @@ Window::Window(v8::Isolate* isolate, const mate::Dictionary& options) {
   web_contents->SetOwnerWindow(window_.get());
   window_->InitFromOptions(options);
   window_->AddObserver(this);
+  AttachAsUserData(window_.get());
 }
 
 Window::~Window() {
@@ -184,28 +185,6 @@ void Window::OnRendererResponsive() {
   Emit("responsive");
 }
 
-void Window::OnDevToolsFocus() {
-  Emit("devtools-focused");
-}
-
-void Window::OnDevToolsOpened() {
-  v8::Locker locker(isolate());
-  v8::HandleScope handle_scope(isolate());
-  auto handle = WebContents::CreateFrom(
-      isolate(), api_web_contents_->GetDevToolsWebContents());
-  devtools_web_contents_.Reset(isolate(), handle.ToV8());
-
-  Emit("devtools-opened");
-}
-
-void Window::OnDevToolsClosed() {
-  v8::Locker locker(isolate());
-  v8::HandleScope handle_scope(isolate());
-  devtools_web_contents_.Reset();
-
-  Emit("devtools-closed");
-}
-
 void Window::OnExecuteWindowsCommand(const std::string& command_name) {
   Emit("app-command", command_name);
 }
@@ -540,13 +519,6 @@ v8::Local<v8::Value> Window::WebContents(v8::Isolate* isolate) {
     return v8::Local<v8::Value>::New(isolate, web_contents_);
 }
 
-v8::Local<v8::Value> Window::DevToolsWebContents(v8::Isolate* isolate) {
-  if (devtools_web_contents_.IsEmpty())
-    return v8::Null(isolate);
-  else
-    return v8::Local<v8::Value>::New(isolate, devtools_web_contents_);
-}
-
 // static
 void Window::BuildPrototype(v8::Isolate* isolate,
                             v8::Local<v8::ObjectTemplate> prototype) {
@@ -618,8 +590,17 @@ void Window::BuildPrototype(v8::Isolate* isolate,
                  &Window::ShowDefinitionForSelection)
 #endif
       .SetProperty("id", &Window::ID, true)
-      .SetProperty("webContents", &Window::WebContents, true)
-      .SetProperty("devToolsWebContents", &Window::DevToolsWebContents, true);
+      .SetProperty("webContents", &Window::WebContents, true);
+}
+
+// static
+v8::Local<v8::Value> Window::From(v8::Isolate* isolate,
+                                  NativeWindow* native_window) {
+  auto existing = TrackableObject::FromWrappedClass(isolate, native_window);
+  if (existing)
+    return existing->GetWrapper(isolate);
+  else
+    return v8::Null(isolate);
 }
 
 }  // namespace api
diff --git a/atom/browser/api/atom_api_window.h b/atom/browser/api/atom_api_window.h
index d60bf0d87e..d2886b5fac 100644
--- a/atom/browser/api/atom_api_window.h
+++ b/atom/browser/api/atom_api_window.h
@@ -43,6 +43,10 @@ class Window : public mate::TrackableObject<Window>,
   static void BuildPrototype(v8::Isolate* isolate,
                              v8::Local<v8::ObjectTemplate> prototype);
 
+  // Returns the BrowserWindow object from |native_window|.
+  static v8::Local<v8::Value> From(v8::Isolate* isolate,
+                                   NativeWindow* native_window);
+
   NativeWindow* window() const { return window_.get(); }
 
  protected:
@@ -69,9 +73,6 @@ class Window : public mate::TrackableObject<Window>,
   void OnWindowLeaveHtmlFullScreen() override;
   void OnRendererUnresponsive() override;
   void OnRendererResponsive() override;
-  void OnDevToolsFocus() override;
-  void OnDevToolsOpened() override;
-  void OnDevToolsClosed() override;
   void OnExecuteWindowsCommand(const std::string& command_name) override;
 
   // mate::Wrappable:
@@ -150,10 +151,8 @@ class Window : public mate::TrackableObject<Window>,
 
   int32_t ID() const;
   v8::Local<v8::Value> WebContents(v8::Isolate* isolate);
-  v8::Local<v8::Value> DevToolsWebContents(v8::Isolate* isolate);
 
   v8::Global<v8::Value> web_contents_;
-  v8::Global<v8::Value> devtools_web_contents_;
   v8::Global<v8::Value> menu_;
 
   api::WebContents* api_web_contents_;
diff --git a/atom/browser/api/lib/browser-window.coffee b/atom/browser/api/lib/browser-window.coffee
index 2a92cfc55f..6ffba50d34 100644
--- a/atom/browser/api/lib/browser-window.coffee
+++ b/atom/browser/api/lib/browser-window.coffee
@@ -48,6 +48,15 @@ BrowserWindow::_init = ->
   # Notify the creation of the window.
   app.emit 'browser-window-created', {}, this
 
+  # Be compatible with old APIs.
+  @webContents.on 'devtools-focused', => @emit 'devtools-focused'
+  @webContents.on 'devtools-opened', => @emit 'devtools-opened'
+  @webContents.on 'devtools-closed', => @emit 'devtools-closed'
+  Object.defineProperty this, 'devToolsWebContents',
+    enumerable: true,
+    configurable: false,
+    get: -> @webContents.devToolsWebContents
+
 BrowserWindow.getFocusedWindow = ->
   windows = BrowserWindow.getAllWindows()
   return window for window in windows when window.isFocused()
diff --git a/atom/browser/api/lib/menu.coffee b/atom/browser/api/lib/menu.coffee
index 3595ba1fe7..f66c1568c0 100644
--- a/atom/browser/api/lib/menu.coffee
+++ b/atom/browser/api/lib/menu.coffee
@@ -79,7 +79,11 @@ Menu::_init = ->
         v8Util.setHiddenValue group[0], 'checked', true unless checked
 
 Menu::popup = (window, x, y) ->
-  throw new TypeError('Invalid window') unless window?.constructor is BrowserWindow
+  unless window?.constructor is BrowserWindow
+    # Shift.
+    y = x
+    x = window
+    window = BrowserWindow.getFocusedWindow()
   if x? and y?
     @_popupAt(window, x, y)
   else
diff --git a/atom/browser/atom_browser_client.cc b/atom/browser/atom_browser_client.cc
index e45caceab0..4969ce47a6 100644
--- a/atom/browser/atom_browser_client.cc
+++ b/atom/browser/atom_browser_client.cc
@@ -12,6 +12,7 @@
 #include "atom/browser/atom_browser_context.h"
 #include "atom/browser/atom_browser_main_parts.h"
 #include "atom/browser/atom_quota_permission_context.h"
+#include "atom/browser/atom_resource_dispatcher_host_delegate.h"
 #include "atom/browser/atom_speech_recognition_manager_delegate.h"
 #include "atom/browser/browser.h"
 #include "atom/browser/native_window.h"
@@ -30,6 +31,7 @@
 #include "content/public/browser/client_certificate_delegate.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/render_view_host.h"
+#include "content/public/browser/resource_dispatcher_host.h"
 #include "content/public/browser/site_instance.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/web_preferences.h"
@@ -226,6 +228,13 @@ void AtomBrowserClient::SelectClientCertificate(
                                               delegate.Pass());
 }
 
+void AtomBrowserClient::ResourceDispatcherHostCreated() {
+  resource_dispatcher_host_delegate_.reset(
+      new AtomResourceDispatcherHostDelegate);
+  content::ResourceDispatcherHost::Get()->SetDelegate(
+      resource_dispatcher_host_delegate_.get());
+}
+
 brightray::BrowserMainParts* AtomBrowserClient::OverrideCreateBrowserMainParts(
     const content::MainFunctionParams&) {
   v8::V8::Initialize();  // Init V8 before creating main parts.
diff --git a/atom/browser/atom_browser_client.h b/atom/browser/atom_browser_client.h
index a0217efede..ee4700456c 100644
--- a/atom/browser/atom_browser_client.h
+++ b/atom/browser/atom_browser_client.h
@@ -23,6 +23,8 @@ class SSLCertRequestInfo;
 
 namespace atom {
 
+class AtomResourceDispatcherHostDelegate;
+
 class AtomBrowserClient : public brightray::BrowserClient,
                           public content::RenderProcessHostObserver {
  public:
@@ -56,6 +58,7 @@ class AtomBrowserClient : public brightray::BrowserClient,
       content::WebContents* web_contents,
       net::SSLCertRequestInfo* cert_request_info,
       scoped_ptr<content::ClientCertificateDelegate> delegate) override;
+  void ResourceDispatcherHostCreated() override;
 
   // brightray::BrowserClient:
   brightray::BrowserMainParts* OverrideCreateBrowserMainParts(
@@ -68,6 +71,9 @@ class AtomBrowserClient : public brightray::BrowserClient,
   // pending_render_process => current_render_process.
   std::map<int, int> pending_processes_;
 
+  scoped_ptr<AtomResourceDispatcherHostDelegate>
+      resource_dispatcher_host_delegate_;
+
   DISALLOW_COPY_AND_ASSIGN(AtomBrowserClient);
 };
 
diff --git a/atom/browser/atom_resource_dispatcher_host_delegate.cc b/atom/browser/atom_resource_dispatcher_host_delegate.cc
new file mode 100644
index 0000000000..46904d2ff9
--- /dev/null
+++ b/atom/browser/atom_resource_dispatcher_host_delegate.cc
@@ -0,0 +1,32 @@
+// 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/browser/atom_resource_dispatcher_host_delegate.h"
+
+#include "atom/common/platform_util.h"
+#include "content/public/browser/browser_thread.h"
+#include "net/base/escape.h"
+#include "url/gurl.h"
+
+using content::BrowserThread;
+
+namespace atom {
+
+AtomResourceDispatcherHostDelegate::AtomResourceDispatcherHostDelegate() {
+}
+
+bool AtomResourceDispatcherHostDelegate::HandleExternalProtocol(
+    const GURL& url,
+    int render_process_id,
+    int render_view_id,
+    bool is_main_frame,
+    ui::PageTransition transition,
+    bool has_user_gesture) {
+  GURL escaped_url(net::EscapeExternalHandlerValue(url.spec()));
+  BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
+      base::Bind(base::IgnoreResult(platform_util::OpenExternal), escaped_url));
+  return true;
+}
+
+}  // namespace atom
diff --git a/atom/browser/atom_resource_dispatcher_host_delegate.h b/atom/browser/atom_resource_dispatcher_host_delegate.h
new file mode 100644
index 0000000000..876554f0f9
--- /dev/null
+++ b/atom/browser/atom_resource_dispatcher_host_delegate.h
@@ -0,0 +1,28 @@
+// 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_BROWSER_ATOM_RESOURCE_DISPATCHER_HOST_DELEGATE_H_
+#define ATOM_BROWSER_ATOM_RESOURCE_DISPATCHER_HOST_DELEGATE_H_
+
+#include "content/public/browser/resource_dispatcher_host_delegate.h"
+
+namespace atom {
+
+class AtomResourceDispatcherHostDelegate
+    : public content::ResourceDispatcherHostDelegate {
+ public:
+  AtomResourceDispatcherHostDelegate();
+
+  // content::ResourceDispatcherHostDelegate:
+  bool HandleExternalProtocol(const GURL& url,
+                              int render_process_id,
+                              int render_view_id,
+                              bool is_main_frame,
+                              ui::PageTransition transition,
+                              bool has_user_gesture) override;
+};
+
+}  // namespace atom
+
+#endif  // ATOM_BROWSER_ATOM_RESOURCE_DISPATCHER_HOST_DELEGATE_H_
diff --git a/atom/browser/common_web_contents_delegate.cc b/atom/browser/common_web_contents_delegate.cc
index 3cef7c6d68..8b7a159dd7 100644
--- a/atom/browser/common_web_contents_delegate.cc
+++ b/atom/browser/common_web_contents_delegate.cc
@@ -21,6 +21,14 @@
 #include "content/public/browser/render_view_host.h"
 #include "storage/browser/fileapi/isolated_context.h"
 
+#if defined(TOOLKIT_VIEWS)
+#include "atom/browser/native_window_views.h"
+#endif
+
+#if defined(USE_X11)
+#include "atom/browser/browser.h"
+#endif
+
 using content::BrowserThread;
 
 namespace atom {
@@ -128,7 +136,11 @@ void CommonWebContentsDelegate::InitWithWebContents(
 }
 
 void CommonWebContentsDelegate::SetOwnerWindow(NativeWindow* owner_window) {
-  content::WebContents* web_contents = GetWebContents();
+  SetOwnerWindow(GetWebContents(), owner_window);
+}
+
+void CommonWebContentsDelegate::SetOwnerWindow(
+    content::WebContents* web_contents, NativeWindow* owner_window) {
   owner_window_ = owner_window->GetWeakPtr();
   NativeWindowRelay* relay = new NativeWindowRelay(owner_window_);
   web_contents->SetUserData(relay->key, relay);
@@ -355,6 +367,23 @@ void CommonWebContentsDelegate::OnDevToolsAppendToFile(
       "DevToolsAPI.appendedToURL", &url_value, nullptr, nullptr);
 }
 
+#if defined(TOOLKIT_VIEWS)
+gfx::ImageSkia CommonWebContentsDelegate::GetDevToolsWindowIcon() {
+  if (!owner_window())
+    return gfx::ImageSkia();
+  return static_cast<views::WidgetDelegate*>(static_cast<NativeWindowViews*>(
+      owner_window()))->GetWindowAppIcon();
+}
+#endif
+
+#if defined(USE_X11)
+void CommonWebContentsDelegate::GetDevToolsWindowWMClass(
+    std::string* name, std::string* class_name) {
+  *class_name = Browser::Get()->GetName();
+  *name = base::StringToLowerASCII(*class_name);
+}
+#endif
+
 void CommonWebContentsDelegate::SetHtmlApiFullscreen(bool enter_fullscreen) {
   // Window is already in fullscreen mode, save the state.
   if (enter_fullscreen && owner_window_->IsFullscreen()) {
diff --git a/atom/browser/common_web_contents_delegate.h b/atom/browser/common_web_contents_delegate.h
index 495b5501a0..ee18f36660 100644
--- a/atom/browser/common_web_contents_delegate.h
+++ b/atom/browser/common_web_contents_delegate.h
@@ -12,6 +12,7 @@
 #include "brightray/browser/default_web_contents_delegate.h"
 #include "brightray/browser/inspectable_web_contents_impl.h"
 #include "brightray/browser/inspectable_web_contents_delegate.h"
+#include "brightray/browser/inspectable_web_contents_view_delegate.h"
 
 namespace atom {
 
@@ -21,7 +22,8 @@ class WebDialogHelper;
 
 class CommonWebContentsDelegate
     : public brightray::DefaultWebContentsDelegate,
-      public brightray::InspectableWebContentsDelegate {
+      public brightray::InspectableWebContentsDelegate,
+      public brightray::InspectableWebContentsViewDelegate {
  public:
   CommonWebContentsDelegate();
   virtual ~CommonWebContentsDelegate();
@@ -32,6 +34,8 @@ class CommonWebContentsDelegate
 
   // Set the window as owner window.
   void SetOwnerWindow(NativeWindow* owner_window);
+  void SetOwnerWindow(content::WebContents* web_contents,
+                      NativeWindow* owner_window);
 
   // Destroy the managed InspectableWebContents object.
   void DestroyWebContents();
@@ -86,6 +90,15 @@ class CommonWebContentsDelegate
   void DevToolsRemoveFileSystem(
       const base::FilePath& file_system_path) override;
 
+  // brightray::InspectableWebContentsViewDelegate:
+#if defined(TOOLKIT_VIEWS)
+  gfx::ImageSkia GetDevToolsWindowIcon() override;
+#endif
+#if defined(USE_X11)
+  void GetDevToolsWindowWMClass(
+      std::string* name, std::string* class_name) override;
+#endif
+
  private:
   // Callback for when DevToolsSaveToFile has completed.
   void OnDevToolsSaveToFile(const std::string& url);
diff --git a/atom/browser/lib/init.coffee b/atom/browser/lib/init.coffee
index 1299364d2f..454baf0b8a 100644
--- a/atom/browser/lib/init.coffee
+++ b/atom/browser/lib/init.coffee
@@ -64,7 +64,9 @@ for packagePath in searchPaths
   catch e
     continue
 
-throw new Error("Unable to find a valid app") unless packageJson?
+unless packageJson?
+  process.nextTick -> process.exit 1
+  throw new Error("Unable to find a valid app")
 
 # Set application's version.
 app.setVersion packageJson.version if packageJson.version?
diff --git a/atom/browser/lib/rpc-server.coffee b/atom/browser/lib/rpc-server.coffee
index 0a28d350e8..149b208b40 100644
--- a/atom/browser/lib/rpc-server.coffee
+++ b/atom/browser/lib/rpc-server.coffee
@@ -106,16 +106,9 @@ ipc.on 'ATOM_BROWSER_GLOBAL', (event, name) ->
   catch e
     event.returnValue = errorToMeta e
 
-ipc.on 'ATOM_BROWSER_CURRENT_WINDOW', (event, guestInstanceId) ->
+ipc.on 'ATOM_BROWSER_CURRENT_WINDOW', (event) ->
   try
-    BrowserWindow = require 'browser-window'
-    if guestInstanceId?
-      guestViewManager = require './guest-view-manager'
-      window = BrowserWindow.fromWebContents guestViewManager.getEmbedder(guestInstanceId)
-    else
-      window = BrowserWindow.fromWebContents event.sender
-      window = BrowserWindow.fromDevToolsWebContents event.sender unless window?
-    event.returnValue = valueToMeta event.sender, window
+    event.returnValue = valueToMeta event.sender, event.sender.getOwnerBrowserWindow()
   catch e
     event.returnValue = errorToMeta e
 
diff --git a/atom/browser/native_window.cc b/atom/browser/native_window.cc
index c3620bba70..80a7d1347f 100644
--- a/atom/browser/native_window.cc
+++ b/atom/browser/native_window.cc
@@ -76,8 +76,6 @@ NativeWindow::NativeWindow(
       aspect_ratio_(0.0),
       inspectable_web_contents_(inspectable_web_contents),
       weak_factory_(this) {
-  inspectable_web_contents->GetView()->SetDelegate(this);
-
   options.Get(switches::kFrame, &has_frame_);
   options.Get(switches::kTransparent, &transparent_);
   options.Get(switches::kEnableLargerThanScreen, &enable_larger_than_screen_);
@@ -160,13 +158,8 @@ void NativeWindow::InitFromOptions(const mate::Dictionary& options) {
   // Then show it.
   bool show = true;
   options.Get(switches::kShow, &show);
-  if (show) {
+  if (show)
     Show();
-  } else {
-    // When RenderView is created it sets to visible, this is to prevent
-    // breaking the visibility API.
-    web_contents()->WasHidden();
-  }
 }
 
 void NativeWindow::SetSize(const gfx::Size& size) {
@@ -418,18 +411,6 @@ void NativeWindow::NotifyWindowExecuteWindowsCommand(
                     OnExecuteWindowsCommand(command));
 }
 
-void NativeWindow::DevToolsFocused() {
-  FOR_EACH_OBSERVER(NativeWindowObserver, observers_, OnDevToolsFocus());
-}
-
-void NativeWindow::DevToolsOpened() {
-  FOR_EACH_OBSERVER(NativeWindowObserver, observers_, OnDevToolsOpened());
-}
-
-void NativeWindow::DevToolsClosed() {
-  FOR_EACH_OBSERVER(NativeWindowObserver, observers_, OnDevToolsClosed());
-}
-
 void NativeWindow::RenderViewCreated(
     content::RenderViewHost* render_view_host) {
   if (!transparent_)
diff --git a/atom/browser/native_window.h b/atom/browser/native_window.h
index 5c8d8c73b0..751644e459 100644
--- a/atom/browser/native_window.h
+++ b/atom/browser/native_window.h
@@ -15,7 +15,7 @@
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
-#include "brightray/browser/inspectable_web_contents_view_delegate.h"
+#include "base/supports_user_data.h"
 #include "content/public/browser/readback_types.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/browser/web_contents_user_data.h"
@@ -50,8 +50,8 @@ namespace atom {
 
 struct DraggableRegion;
 
-class NativeWindow : public content::WebContentsObserver,
-                     public brightray::InspectableWebContentsViewDelegate {
+class NativeWindow : public base::SupportsUserData,
+                     public content::WebContentsObserver {
  public:
   using CapturePageCallback = base::Callback<void(const SkBitmap& bitmap)>;
 
@@ -234,11 +234,6 @@ class NativeWindow : public content::WebContentsObserver,
   NativeWindow(brightray::InspectableWebContents* inspectable_web_contents,
                const mate::Dictionary& options);
 
-  // brightray::InspectableWebContentsViewDelegate:
-  void DevToolsFocused() override;
-  void DevToolsOpened() override;
-  void DevToolsClosed() override;
-
   // content::WebContentsObserver:
   void RenderViewCreated(content::RenderViewHost* render_view_host) override;
   void BeforeUnloadDialogCancelled() override;
diff --git a/atom/browser/native_window_mac.mm b/atom/browser/native_window_mac.mm
index f0a685e4d9..3e8dab2133 100644
--- a/atom/browser/native_window_mac.mm
+++ b/atom/browser/native_window_mac.mm
@@ -470,8 +470,6 @@ bool NativeWindowMac::IsFocused() {
 }
 
 void NativeWindowMac::Show() {
-  web_contents()->WasShown();
-
   // This method is supposed to put focus on window, however if the app does not
   // have focus then "makeKeyAndOrderFront" will only show the window.
   [NSApp activateIgnoringOtherApps:YES];
@@ -480,13 +478,11 @@ void NativeWindowMac::Show() {
 }
 
 void NativeWindowMac::ShowInactive() {
-  web_contents()->WasShown();
   [window_ orderFrontRegardless];
 }
 
 void NativeWindowMac::Hide() {
   [window_ orderOut:nil];
-  web_contents()->WasHidden();
 }
 
 bool NativeWindowMac::IsVisible() {
diff --git a/atom/browser/native_window_observer.h b/atom/browser/native_window_observer.h
index 5b0a0c56b3..33ab1ecb6b 100644
--- a/atom/browser/native_window_observer.h
+++ b/atom/browser/native_window_observer.h
@@ -55,11 +55,6 @@ class NativeWindowObserver {
   virtual void OnWindowEnterHtmlFullScreen() {}
   virtual void OnWindowLeaveHtmlFullScreen() {}
 
-  // Redirect devtools events.
-  virtual void OnDevToolsFocus() {}
-  virtual void OnDevToolsOpened() {}
-  virtual void OnDevToolsClosed() {}
-
   // Called when renderer is hung.
   virtual void OnRendererUnresponsive() {}
 
diff --git a/atom/browser/native_window_views.cc b/atom/browser/native_window_views.cc
index 70707219f3..e9db97e195 100644
--- a/atom/browser/native_window_views.cc
+++ b/atom/browser/native_window_views.cc
@@ -169,9 +169,6 @@ NativeWindowViews::NativeWindowViews(
       menu_bar_autohide_(false),
       menu_bar_visible_(false),
       menu_bar_alt_pressed_(false),
-#if defined(OS_WIN)
-      is_minimized_(false),
-#endif
       keyboard_event_handler_(new views::UnhandledKeyboardEventHandler),
       use_content_size_(false),
       resizable_(true) {
@@ -228,6 +225,9 @@ NativeWindowViews::NativeWindowViews(
 
   window_->Init(params);
 
+  bool fullscreen = false;
+  options.Get(switches::kFullscreen, &fullscreen);
+
 #if defined(USE_X11)
   // Start monitoring window states.
   window_state_watcher_.reset(new WindowStateWatcher(this));
@@ -253,8 +253,7 @@ NativeWindowViews::NativeWindowViews(
   }
 
   // Before the window is mapped, there is no SHOW_FULLSCREEN_STATE.
-  bool fullscreen = false;
-  if (options.Get(switches::kFullscreen, & fullscreen) && fullscreen) {
+  if (fullscreen) {
     state_atom_list.push_back(GetAtom("_NET_WM_STATE_FULLSCREEN"));
   }
 
@@ -278,6 +277,12 @@ NativeWindowViews::NativeWindowViews(
     bounds = ContentBoundsToWindowBounds(bounds);
 
 #if defined(OS_WIN)
+  // Save initial window state.
+  if (fullscreen)
+    last_window_state_ = ui::SHOW_STATE_FULLSCREEN;
+  else
+    last_window_state_ = ui::SHOW_STATE_NORMAL;
+
   if (!has_frame()) {
     // Set Window style so that we get a minimize and maximize animation when
     // frameless.
@@ -338,17 +343,14 @@ bool NativeWindowViews::IsFocused() {
 }
 
 void NativeWindowViews::Show() {
-  web_contents()->WasShown();
   window_->native_widget_private()->ShowWithWindowState(GetRestoredState());
 }
 
 void NativeWindowViews::ShowInactive() {
-  web_contents()->WasShown();
   window_->ShowInactive();
 }
 
 void NativeWindowViews::Hide() {
-  window_->Hide();
   web_contents()->WasHidden();
 }
 
@@ -391,11 +393,16 @@ bool NativeWindowViews::IsMinimized() {
 void NativeWindowViews::SetFullScreen(bool fullscreen) {
 #if defined(OS_WIN)
   // There is no native fullscreen state on Windows.
-  window_->SetFullscreen(fullscreen);
-  if (fullscreen)
+  if (fullscreen) {
+    last_window_state_ = ui::SHOW_STATE_FULLSCREEN;
     NotifyWindowEnterFullScreen();
-  else
+  } else {
+    last_window_state_ = ui::SHOW_STATE_NORMAL;
     NotifyWindowLeaveFullScreen();
+  }
+  // We set the new value after notifying, so we can handle the size event
+  // correctly.
+  window_->SetFullscreen(fullscreen);
 #else
   if (IsVisible())
     window_->SetFullscreen(fullscreen);
@@ -807,48 +814,63 @@ void NativeWindowViews::OnWidgetMove() {
 
 #if defined(OS_WIN)
 bool NativeWindowViews::ExecuteWindowsCommand(int command_id) {
-  // Windows uses the 4 lower order bits of |command_id| for type-specific
-  // information so we must exclude this when comparing.
-  static const int sc_mask = 0xFFF0;
-  if ((command_id & sc_mask) == SC_MINIMIZE) {
-    NotifyWindowMinimize();
-    is_minimized_ = true;
-  } else if ((command_id & sc_mask) == SC_RESTORE) {
-    if (is_minimized_)
-      NotifyWindowRestore();
-    else
-      NotifyWindowUnmaximize();
-    is_minimized_ = false;
-  } else if ((command_id & sc_mask) == SC_MAXIMIZE) {
-    NotifyWindowMaximize();
-  } else {
-    std::string command = AppCommandToString(command_id);
-    NotifyWindowExecuteWindowsCommand(command);
-  }
+  std::string command = AppCommandToString(command_id);
+  NotifyWindowExecuteWindowsCommand(command);
   return false;
 }
 #endif
 
-gfx::ImageSkia NativeWindowViews::GetDevToolsWindowIcon() {
-  return GetWindowAppIcon();
-}
-
-#if defined(USE_X11)
-void NativeWindowViews::GetDevToolsWindowWMClass(
-    std::string* name, std::string* class_name) {
-  *class_name = Browser::Get()->GetName();
-  *name = base::StringToLowerASCII(*class_name);
-}
-#endif
-
 #if defined(OS_WIN)
 bool NativeWindowViews::PreHandleMSG(
     UINT message, WPARAM w_param, LPARAM l_param, LRESULT* result) {
-  // Handle thumbar button click message.
-  if (message == WM_COMMAND && HIWORD(w_param) == THBN_CLICKED)
-    return taskbar_host_.HandleThumbarButtonEvent(LOWORD(w_param));
-  else
-    return false;
+  switch (message) {
+    case WM_COMMAND:
+      // Handle thumbar button click message.
+      if (HIWORD(w_param) == THBN_CLICKED)
+        return taskbar_host_.HandleThumbarButtonEvent(LOWORD(w_param));
+      return false;
+    case WM_SIZE:
+      // Handle window state change.
+      HandleSizeEvent(w_param, l_param);
+      return false;
+    default:
+      return false;
+  }
+}
+
+void NativeWindowViews::HandleSizeEvent(WPARAM w_param, LPARAM l_param) {
+  // Here we handle the WM_SIZE event in order to figure out what is the current
+  // window state and notify the user accordingly.
+  switch (w_param) {
+    case SIZE_MAXIMIZED:
+      last_window_state_ = ui::SHOW_STATE_MAXIMIZED;
+      NotifyWindowMaximize();
+      break;
+    case SIZE_MINIMIZED:
+      last_window_state_ = ui::SHOW_STATE_MINIMIZED;
+      NotifyWindowMinimize();
+      break;
+    case SIZE_RESTORED:
+      if (last_window_state_ == ui::SHOW_STATE_NORMAL)
+        return;
+
+      switch (last_window_state_) {
+        case ui::SHOW_STATE_MAXIMIZED:
+          last_window_state_ = ui::SHOW_STATE_NORMAL;
+          NotifyWindowUnmaximize();
+          break;
+        case ui::SHOW_STATE_MINIMIZED:
+          if (IsFullscreen()) {
+            last_window_state_ = ui::SHOW_STATE_FULLSCREEN;
+            NotifyWindowEnterFullScreen();
+          } else {
+            last_window_state_ = ui::SHOW_STATE_NORMAL;
+            NotifyWindowRestore();
+          }
+          break;
+      }
+      break;
+  }
 }
 #endif
 
diff --git a/atom/browser/native_window_views.h b/atom/browser/native_window_views.h
index 355f5bd38e..71e122d381 100644
--- a/atom/browser/native_window_views.h
+++ b/atom/browser/native_window_views.h
@@ -131,17 +131,12 @@ class NativeWindowViews : public NativeWindow,
   bool ExecuteWindowsCommand(int command_id) override;
 #endif
 
-  // brightray::InspectableWebContentsViewDelegate:
-  gfx::ImageSkia GetDevToolsWindowIcon() override;
-#if defined(USE_X11)
-  void GetDevToolsWindowWMClass(
-      std::string* name, std::string* class_name) override;
-#endif
-
 #if defined(OS_WIN)
   // MessageHandlerDelegate:
   bool PreHandleMSG(
       UINT message, WPARAM w_param, LPARAM l_param, LRESULT* result) override;
+
+  void HandleSizeEvent(WPARAM w_param, LPARAM l_param);
 #endif
 
   // NativeWindow:
@@ -178,9 +173,9 @@ class NativeWindowViews : public NativeWindow,
 #elif defined(OS_WIN)
   // Weak ref.
   AtomDesktopWindowTreeHostWin* atom_desktop_window_tree_host_win_;
-  // Records window was whether restored from minimized state or maximized
-  // state.
-  bool is_minimized_;
+
+  ui::WindowShowState last_window_state_;
+
   // In charge of running taskbar related APIs.
   TaskbarHost taskbar_host_;
 #endif
diff --git a/atom/browser/resources/mac/Info.plist b/atom/browser/resources/mac/Info.plist
index eb39cb35f9..b1b905a433 100644
--- a/atom/browser/resources/mac/Info.plist
+++ b/atom/browser/resources/mac/Info.plist
@@ -17,7 +17,7 @@
   <key>CFBundleIconFile</key>
   <string>atom.icns</string>
   <key>CFBundleVersion</key>
-  <string>0.33.3</string>
+  <string>0.33.4</string>
   <key>LSMinimumSystemVersion</key>
   <string>10.8.0</string>
   <key>NSMainNibFile</key>
diff --git a/atom/browser/resources/win/atom.rc b/atom/browser/resources/win/atom.rc
index 6fba6cf806..6d900b0ea0 100644
--- a/atom/browser/resources/win/atom.rc
+++ b/atom/browser/resources/win/atom.rc
@@ -56,8 +56,8 @@ END
 //
 
 VS_VERSION_INFO VERSIONINFO
- FILEVERSION 0,33,3,0
- PRODUCTVERSION 0,33,3,0
+ FILEVERSION 0,33,4,0
+ PRODUCTVERSION 0,33,4,0
  FILEFLAGSMASK 0x3fL
 #ifdef _DEBUG
  FILEFLAGS 0x1L
@@ -74,12 +74,12 @@ BEGIN
         BEGIN
             VALUE "CompanyName", "GitHub, Inc."
             VALUE "FileDescription", "Electron"
-            VALUE "FileVersion", "0.33.3"
+            VALUE "FileVersion", "0.33.4"
             VALUE "InternalName", "electron.exe"
             VALUE "LegalCopyright", "Copyright (C) 2015 GitHub, Inc. All rights reserved."
             VALUE "OriginalFilename", "electron.exe"
             VALUE "ProductName", "Electron"
-            VALUE "ProductVersion", "0.33.3"
+            VALUE "ProductVersion", "0.33.4"
             VALUE "SquirrelAwareVersion", "1"
         END
     END
diff --git a/atom/common/atom_version.h b/atom/common/atom_version.h
index 4f24034754..998e430881 100644
--- a/atom/common/atom_version.h
+++ b/atom/common/atom_version.h
@@ -7,7 +7,7 @@
 
 #define ATOM_MAJOR_VERSION 0
 #define ATOM_MINOR_VERSION 33
-#define ATOM_PATCH_VERSION 3
+#define ATOM_PATCH_VERSION 4
 
 #define ATOM_VERSION_IS_RELEASE 1
 
diff --git a/atom/renderer/api/lib/remote.coffee b/atom/renderer/api/lib/remote.coffee
index 00d22ab8cf..1f17cf3400 100644
--- a/atom/renderer/api/lib/remote.coffee
+++ b/atom/renderer/api/lib/remote.coffee
@@ -130,7 +130,7 @@ exports.require = (module) ->
 windowCache = null
 exports.getCurrentWindow = ->
   return windowCache if windowCache?
-  meta = ipc.sendSync 'ATOM_BROWSER_CURRENT_WINDOW', process.guestInstanceId
+  meta = ipc.sendSync 'ATOM_BROWSER_CURRENT_WINDOW'
   windowCache = metaToValue meta
 
 # Get current WebContents object.
diff --git a/atom/renderer/lib/inspector.coffee b/atom/renderer/lib/inspector.coffee
index 126f68f960..5f08a2acf8 100644
--- a/atom/renderer/lib/inspector.coffee
+++ b/atom/renderer/lib/inspector.coffee
@@ -44,7 +44,7 @@ createMenu = (x, y, items, document) ->
 showFileChooserDialog = (callback) ->
   remote = require 'remote'
   dialog = remote.require 'dialog'
-  files = dialog.showOpenDialog remote.getCurrentWindow(), null
+  files = dialog.showOpenDialog {}
   callback pathToHtml5FileObject files[0] if files?
 
 pathToHtml5FileObject = (path) ->
diff --git a/atom/renderer/lib/override.coffee b/atom/renderer/lib/override.coffee
index 5cffdd486d..93cf8b8357 100644
--- a/atom/renderer/lib/override.coffee
+++ b/atom/renderer/lib/override.coffee
@@ -122,3 +122,7 @@ window.history.go = (offset) -> sendHistoryOperation 'goToOffset', offset
 Object.defineProperty window.history, 'length',
   get: ->
     getHistoryOperation 'length'
+
+# Make document.hidden return the correct value.
+Object.defineProperty document, 'hidden',
+  get: -> !remote.getCurrentWindow().isVisible()
diff --git a/atom/renderer/lib/web-view/web-view.coffee b/atom/renderer/lib/web-view/web-view.coffee
index 65e4501975..3a563101f0 100644
--- a/atom/renderer/lib/web-view/web-view.coffee
+++ b/atom/renderer/lib/web-view/web-view.coffee
@@ -46,6 +46,7 @@ class WebViewImpl
     # that we don't end up allocating a second guest.
     if @guestInstanceId
       guestViewInternal.destroyGuest @guestInstanceId
+      @webContents = null
       @guestInstanceId = undefined
       @beforeFirstNavigation = true
       @attributes[webViewConstants.ATTRIBUTE_PARTITION].validPartitionId = true
@@ -188,6 +189,7 @@ class WebViewImpl
 
   attachWindow: (guestInstanceId) ->
     @guestInstanceId = guestInstanceId
+    @webContents = remote.getGuestWebContents @guestInstanceId
     return true unless @internalInstanceId
 
     guestViewInternal.attachGuest @internalInstanceId, @guestInstanceId, @buildParams()
@@ -299,7 +301,7 @@ registerWebViewElement = ->
   createHandler = (m) ->
     (args...) ->
       internal = v8Util.getHiddenValue this, 'internal'
-      remote.getGuestWebContents(internal.guestInstanceId)[m]  args...
+      internal.webContents[m] args...
   proto[m] = createHandler m for m in methods
 
   window.WebView = webFrame.registerEmbedderCustomElement 'webview',
diff --git a/docs-translations/ko-KR/api/menu.md b/docs-translations/ko-KR/api/menu.md
index a8ac499f57..56b7f4a198 100644
--- a/docs-translations/ko-KR/api/menu.md
+++ b/docs-translations/ko-KR/api/menu.md
@@ -229,11 +229,11 @@ Menu.setApplicationMenu(menu);
 
 또한 `template`에는 다른 속성도 추가할 수 있으며 메뉴가 만들어질 때 해당 메뉴 아이템의 프로퍼티로 변환됩니다.
 
-### `Menu.popup(browserWindow[, x, y])`
+### `Menu.popup([browserWindow, x, y])`
 
-* `browserWindow` BrowserWindow
+* `browserWindow` BrowserWindow (optional)
 * `x` Number (optional)
-* `y` Number (만약 `x`를 지정했을 경우 `y`도 필수로 지정해야 합니다)
+* `y` Number (만약 `x`를 지정했을 경우 반드시 `y`도 지정해야 합니다)
 
 메뉴를 `browserWindow` 내부 팝업으로 표시합니다.
 옵션으로 메뉴를 표시할 `(x,y)` 좌표를 지정할 수 있습니다.
diff --git a/docs-translations/ko-KR/api/screen.md b/docs-translations/ko-KR/api/screen.md
index 5e0805749f..2d3c02f854 100644
--- a/docs-translations/ko-KR/api/screen.md
+++ b/docs-translations/ko-KR/api/screen.md
@@ -6,7 +6,7 @@
 `screen`은 [EventEmitter](http://nodejs.org/api/events.html#events_class_events_eventemitter)를 상속 받았습니다.
 
 **참고:** 랜더러 / DevTools에선 이미 DOM 속성이 `window.screen`을 가지고 있으므로 `screen = require('screen')` 형식으로 모듈을 사용할 수 없습니다.
-밑의 예제와 같이 `electronScreen` 같은 이름으로 모듈 이름을 대체하여 사용해야 합니다.
+아래의 예제와 같이 `electronScreen` 같은 이름으로 모듈 이름을 대체하여 사용해야 합니다.
 
 다음 예제는 화면 전체를 채우는 윈도우 창을 생성합니다:
 
diff --git a/docs-translations/ko-KR/api/session.md b/docs-translations/ko-KR/api/session.md
index 4c6ead1647..96d38dda5d 100644
--- a/docs-translations/ko-KR/api/session.md
+++ b/docs-translations/ko-KR/api/session.md
@@ -181,3 +181,29 @@ proxy-uri = [<proxy-scheme>"://"]<proxy-host>[":"<proxy-port>]
 * `path` String - 다운로드 위치
 
 다운로드 저장 위치를 지정합니다. 기본 다운로드 위치는 각 어플리케이션 데이터 디렉터리의 `Downloads` 폴더입니다.
+
+### `session.enableNetworkEmulation(options)`
+
+* `options` Object
+  * `offline` Boolean - 네트워크의 오프라인 상태 여부
+  * `latency` Double - 밀리세컨드 단위의 RTT
+  * `downloadThroughput` Double - Bps 단위의 다운로드 주기
+  * `uploadThroughput` Double - Bps 단위의 업로드 주기
+
+제공된 설정으로 `session`의 네트워크를 에뮬레이트합니다.
+
+```javascript
+// 50kbps의 처리량과 함께 500ms의 레이턴시로 GPRS 연결을 에뮬레이트합니다.
+window.webContents.session.enableNetworkEmulation({
+    latency: 500,
+    downloadThroughput: 6400,
+    uploadThroughput: 6400
+});
+
+// 네트워크가 끊긴 상태를 에뮬레이트합니다.
+window.webContents.session.enableNetworkEmulation({offline: true});
+```
+
+### `session.disableNetworkEmulation`
+
+활성화된 `session`의 에뮬레이션을 비활성화합니다. 기본 네트워크 설정으로 돌아갑니다.
diff --git a/docs-translations/ko-KR/tutorial/quick-start.md b/docs-translations/ko-KR/tutorial/quick-start.md
index 4a6ce6d225..3edf13cc47 100644
--- a/docs-translations/ko-KR/tutorial/quick-start.md
+++ b/docs-translations/ko-KR/tutorial/quick-start.md
@@ -127,31 +127,31 @@ app.on('ready', function() {
 앱을 작성한 후 [어플리케이션 배포](application-distribution.md) 가이드를 따라 앱을 패키징 하고 패키징한 앱을 실행할 수 있습니다.
 또한 Electron 실행파일을 다운로드 받아 바로 실행해 볼 수도 있습니다.
 
-### electron-prebuilt
+### electron-prebuilt 사용
 
 `npm`을 통해 `electron-prebuilt` 패키지를 전역에 설치하면 간단한 명령으로 앱을 실행할 수 있습니다.
 
-앱 디렉터리 내에서 이렇게 실행합니다:
+앱 디렉터리 내에서 다음 명령으로 실행할 수 있습니다:
 
 ```bash
 electron .
 ```
 
-또는 앱 디렉터리 밖에서 앱 디렉터리를 입력해도 됩니다:
+또는 앱 디렉터리 밖에서 앱을 실행할 수도 있습니다:
 
 ```bash
 electron app
 ```
 
-npm 모듈을 로컬에 설치했다면 이렇게 실행할 수 있습니다:
+npm 모듈을 로컬에 설치했다면 다음 명령으로 실행할 수 있습니다:
 
 ```bash
 ./node_modules/.bin/electron .
 ```
 
-### 임의로 다운로드 받은 Electron
+### 다운로드 받은 Electron 바이너리 사용
 
-만약 Electron 바이너리를 임의로 다운로드 받았다면 다음과 같이 앱 디렉터리에 놓고 실행하면 됩니다.
+따로 Electron 바이너리를 다운로드 받았다면 다음 예시와 같이 실행하면 됩니다.
 
 #### Windows
 
diff --git a/docs/api/browser-window.md b/docs/api/browser-window.md
index a1870bc66a..1a2870f205 100644
--- a/docs/api/browser-window.md
+++ b/docs/api/browser-window.md
@@ -24,14 +24,13 @@ You can also create a window without chrome by using
 [EventEmitter](http://nodejs.org/api/events.html#events_class_events_eventemitter).
 
 It creates a new `BrowserWindow` with native properties as set by the `options`.
-Properties `width` and `height` are required.
 
 ### `new BrowserWindow(options)`
 
 `options` Object, properties:
 
-* `width` Integer (**required**) - Window's width.
-* `height` Integer (**required**) - Window's height.
+* `width` Integer - Window's width.
+* `height` Integer - Window's height.
 * `x` Integer - Window's left offset from screen.
 * `y` Integer - Window's top offset from screen.
 * `use-content-size` Boolean - The `width` and `height` would be used as web
@@ -232,18 +231,6 @@ Emitted when the window enters full screen state triggered by html api.
 
 Emitted when the window leaves full screen state triggered by html api.
 
-### Event: 'devtools-opened'
-
-Emitted when DevTools is opened.
-
-### Event: 'devtools-closed'
-
-Emitted when DevTools is closed.
-
-### Event: 'devtools-focused'
-
-Emitted when DevTools is focused / opened.
-
 ### Event: 'app-command':
 
 Emitted when an [App Command](https://msdn.microsoft.com/en-us/library/windows/desktop/ms646275(v=vs.85).aspx)
@@ -318,16 +305,6 @@ operations will be done via it.
 See the [`webContents` documentation](web-contents.md) for its methods and
 events.
 
-**Note:** Users should never store this object because it may become `null`
-when the renderer process (web page) has crashed.
-
-### `win.devToolsWebContents`
-
-Get the `WebContents` of DevTools for this window.
-
-**Note:** Users should never store this object because it may become `null`
-when the DevTools has been closed.
-
 ### `win.id`
 
 The unique ID of this window.
@@ -596,41 +573,6 @@ bar will become grey when set to `true`.
 
 Whether the window's document has been edited.
 
-### `win.openDevTools([options])`
-
-* `options` Object (optional). Properties:
-  * `detach` Boolean - opens DevTools in a new window
-
-Opens the developer tools.
-
-### `win.closeDevTools()`
-
-Closes the developer tools.
-
-### `win.isDevToolsOpened()`
-
-Returns whether the developer tools are opened.
-
-### `win.toggleDevTools()`
-
-Toggles the developer tools.
-
-### `win.isDevToolsFocused()`
-
-Returns whether the developer tools is focused.
-
-### `win.inspectElement(x, y)`
-
-* `x` Integer
-* `y` Integer
-
-Starts inspecting element at position (`x`, `y`).
-
-### `win.inspectServiceWorker()`
-
-Opens the developer tools for the service worker context present in the web
-contents.
-
 ### `win.focusOnWebView()`
 
 ### `win.blurWebView()`
diff --git a/docs/api/menu-item.md b/docs/api/menu-item.md
index 89524d9f23..37079233fc 100644
--- a/docs/api/menu-item.md
+++ b/docs/api/menu-item.md
@@ -1,6 +1,6 @@
 # MenuItem
 
-The `menu-item` module allows you to add items to an application or content
+The `menu-item` module allows you to add items to an application or context
 [`menu`](menu.md).
 
 See [`menu`](menu.md) for examples.
diff --git a/docs/api/menu.md b/docs/api/menu.md
index f48b07e7e4..cabd04ca85 100644
--- a/docs/api/menu.md
+++ b/docs/api/menu.md
@@ -237,9 +237,9 @@ Generally, the `template` is just an array of `options` for constructing a
 You can also attach other fields to the element of the `template` and they
 will become properties of the constructed menu items.
 
-### `Menu.popup(browserWindow[, x, y])`
+### `Menu.popup([browserWindow, x, y])`
 
-* `browserWindow` BrowserWindow
+* `browserWindow` BrowserWindow (optional)
 * `x` Number (optional)
 * `y` Number (**required** if `x` is used)
 
diff --git a/docs/api/web-contents.md b/docs/api/web-contents.md
index b2e924e5d0..08670bad9d 100644
--- a/docs/api/web-contents.md
+++ b/docs/api/web-contents.md
@@ -154,6 +154,18 @@ Emitted when a plugin process has crashed.
 
 Emitted when `webContents` is destroyed.
 
+### Event: 'devtools-opened'
+
+Emitted when DevTools is opened.
+
+### Event: 'devtools-closed'
+
+Emitted when DevTools is closed.
+
+### Event: 'devtools-focused'
+
+Emitted when DevTools is focused / opened.
+
 ## Instance Methods
 
 The `webContents` object has the following instance methods:
@@ -441,6 +453,40 @@ Adds the specified path to DevTools workspace.
 
 Removes the specified path from DevTools workspace.
 
+### `webContents.openDevTools([options])`
+
+* `options` Object (optional). Properties:
+  * `detach` Boolean - opens DevTools in a new window
+
+Opens the developer tools.
+
+### `webContents.closeDevTools()`
+
+Closes the developer tools.
+
+### `webContents.isDevToolsOpened()`
+
+Returns whether the developer tools are opened.
+
+### `webContents.toggleDevTools()`
+
+Toggles the developer tools.
+
+### `webContents.isDevToolsFocused()`
+
+Returns whether the developer tools is focused.
+
+### `webContents.inspectElement(x, y)`
+
+* `x` Integer
+* `y` Integer
+
+Starts inspecting element at position (`x`, `y`).
+
+### `webContents.inspectServiceWorker()`
+
+Opens the developer tools for the service worker context.
+
 ### `webContents.send(channel[, args...])`
 
 * `channel` String
@@ -565,9 +611,23 @@ For the `mouseWheel` event, the `event` object also have following properties:
 Begin subscribing for presentation events and captured frames, the `callback`
 will be called with `callback(frameBuffer)` when there is a presentation event.
 
-The `frameBuffer` is a `Buffer` that contains raw pixel data, in the format of
-32bit ARGB.
+The `frameBuffer` is a `Buffer` that contains raw pixel data. On most machines,
+the pixel data is effectively stored in 32bit BGRA format, but the actual
+representation depends on the endianness of the processor (most modern
+processors are little-endian, on machines with big-endian processors the data
+is in 32bit ARGB format).
 
 ### `webContents.endFrameSubscription()`
 
 End subscribing for frame presentation events.
+
+## Instance Properties
+
+`WebContents` objects also have the following properties:
+
+### `webContents.devToolsWebContents`
+
+Get the `WebContents` of DevTools for this `WebContents`.
+
+**Note:** Users should never store this object because it may become `null`
+when the DevTools has been closed.
diff --git a/docs/tutorial/quick-start.md b/docs/tutorial/quick-start.md
index 4ce65a1dc1..94368df09c 100644
--- a/docs/tutorial/quick-start.md
+++ b/docs/tutorial/quick-start.md
@@ -143,8 +143,8 @@ working as expected.
 
 ### electron-prebuilt
 
-If you've installed `electron-prebuilt` globally with `npm`, then you need only
-run the following in your app's source directory:
+If you've installed `electron-prebuilt` globally with `npm`, then you will only need
+to run the following in your app's source directory:
 
 ```bash
 electron .
@@ -158,7 +158,7 @@ If you've installed it locally, then run:
 
 ### Manually Downloaded Electron Binary
 
-If you downloaded Electron manually, you can also just use the included
+If you downloaded Electron manually, you can also use the included
 binary to execute your app directly.
 
 #### Windows
diff --git a/filenames.gypi b/filenames.gypi
index cb6a2273ea..0e7010d7a4 100644
--- a/filenames.gypi
+++ b/filenames.gypi
@@ -129,6 +129,8 @@
       'atom/browser/atom_javascript_dialog_manager.h',
       'atom/browser/atom_quota_permission_context.cc',
       'atom/browser/atom_quota_permission_context.h',
+      'atom/browser/atom_resource_dispatcher_host_delegate.cc',
+      'atom/browser/atom_resource_dispatcher_host_delegate.h',
       'atom/browser/atom_speech_recognition_manager_delegate.cc',
       'atom/browser/atom_speech_recognition_manager_delegate.h',
       'atom/browser/atom_ssl_config_service.cc',
diff --git a/vendor/brightray b/vendor/brightray
index 75f7d3fd88..6cbb4ad4d1 160000
--- a/vendor/brightray
+++ b/vendor/brightray
@@ -1 +1 @@
-Subproject commit 75f7d3fd88ae60026a0717b93e3bf7182f827dc3
+Subproject commit 6cbb4ad4d173d25b66eecf675c2b25ee64196429