build: remove enable_osr build flag (#38703)

Co-authored-by: Milan Burda <miburda@microsoft.com>

BUILD.gn

@@ -457,6 +457,7 @@ source_set("electron_lib") {
     "//services/proxy_resolver:lib",
     "//services/video_capture/public/mojom:constants",
     "//services/viz/privileged/mojom/compositing",
+    "//services/viz/public/mojom",
     "//skia",
     "//third_party/blink/public:blink",
     "//third_party/blink/public:blink_devtools_inspector_resources",
@@ -470,6 +471,7 @@ source_set("electron_lib") {
     "//third_party/widevine/cdm:headers",
     "//third_party/zlib/google:zip",
     "//ui/base/idle",
+    "//ui/compositor",
     "//ui/events:dom_keycode_converter",
     "//ui/gl",
     "//ui/native_theme",
@@ -670,32 +672,6 @@ source_set("electron_lib") {
     ]
   }
 
-  if (enable_osr) {
-    sources += [
-      "shell/browser/osr/osr_host_display_client.cc",
-      "shell/browser/osr/osr_host_display_client.h",
-      "shell/browser/osr/osr_render_widget_host_view.cc",
-      "shell/browser/osr/osr_render_widget_host_view.h",
-      "shell/browser/osr/osr_video_consumer.cc",
-      "shell/browser/osr/osr_video_consumer.h",
-      "shell/browser/osr/osr_view_proxy.cc",
-      "shell/browser/osr/osr_view_proxy.h",
-      "shell/browser/osr/osr_web_contents_view.cc",
-      "shell/browser/osr/osr_web_contents_view.h",
-    ]
-    if (is_mac) {
-      sources += [
-        "shell/browser/osr/osr_host_display_client_mac.mm",
-        "shell/browser/osr/osr_web_contents_view_mac.mm",
-      ]
-    }
-    deps += [
-      "//components/viz/service",
-      "//services/viz/public/mojom",
-      "//ui/compositor",
-    ]
-  }
-
   if (enable_views_api) {
     sources += [
       "shell/browser/api/views/electron_api_image_view.cc",
@@ -946,11 +922,7 @@ if (is_mac) {
 
     include_dirs = [ "." ]
     sources = filenames.framework_sources
-    frameworks = []
-
-    if (enable_osr) {
-      frameworks += [ "IOSurface.framework" ]
-    }
+    frameworks = [ "IOSurface.framework" ]
 
     ldflags = [
       "-Wl,-install_name,@rpath/$output_name.framework/$output_name",

buildflags/BUILD.gn

@@ -9,7 +9,6 @@ buildflag_header("buildflags") {
   header = "buildflags.h"
 
   flags = [
-    "ENABLE_OSR=$enable_osr",
     "ENABLE_VIEWS_API=$enable_views_api",
     "ENABLE_PDF_VIEWER=$enable_pdf_viewer",
     "ENABLE_ELECTRON_EXTENSIONS=$enable_electron_extensions",

buildflags/buildflags.gni

@@ -3,8 +3,6 @@
 # found in the LICENSE file.
 
 declare_args() {
-  enable_osr = true
-
   enable_views_api = true
 
   enable_pdf_viewer = true

filenames.gni

@@ -147,6 +147,8 @@ filenames = {
     "shell/browser/notifications/mac/notification_center_delegate.mm",
     "shell/browser/notifications/mac/notification_presenter_mac.h",
     "shell/browser/notifications/mac/notification_presenter_mac.mm",
+    "shell/browser/osr/osr_host_display_client_mac.mm",
+    "shell/browser/osr/osr_web_contents_view_mac.mm",
     "shell/browser/relauncher_mac.cc",
     "shell/browser/ui/certificate_trust_mac.mm",
     "shell/browser/ui/cocoa/delayed_native_view_host.mm",
@@ -451,6 +453,16 @@ filenames = {
     "shell/browser/notifications/notification_presenter.h",
     "shell/browser/notifications/platform_notification_service.cc",
     "shell/browser/notifications/platform_notification_service.h",
+    "shell/browser/osr/osr_host_display_client.cc",
+    "shell/browser/osr/osr_host_display_client.h",
+    "shell/browser/osr/osr_render_widget_host_view.cc",
+    "shell/browser/osr/osr_render_widget_host_view.h",
+    "shell/browser/osr/osr_video_consumer.cc",
+    "shell/browser/osr/osr_video_consumer.h",
+    "shell/browser/osr/osr_view_proxy.cc",
+    "shell/browser/osr/osr_view_proxy.h",
+    "shell/browser/osr/osr_web_contents_view.cc",
+    "shell/browser/osr/osr_web_contents_view.h",
     "shell/browser/plugins/plugin_utils.cc",
     "shell/browser/plugins/plugin_utils.h",
     "shell/browser/protocol_registry.cc",

shell/browser/api/electron_api_base_window.cc

@@ -83,7 +83,6 @@ BaseWindow::BaseWindow(v8::Isolate* isolate,
   if (options.Get("parent", &parent) && !parent.IsEmpty())
     parent_window_.Reset(isolate, parent.ToV8());
 
-#if BUILDFLAG(ENABLE_OSR)
   // Offscreen windows are always created frameless.
   gin_helper::Dictionary web_preferences;
   bool offscreen;
@@ -91,7 +90,6 @@ BaseWindow::BaseWindow(v8::Isolate* isolate,
       web_preferences.Get(options::kOffscreen, &offscreen) && offscreen) {
     const_cast<gin_helper::Dictionary&>(options).Set(options::kFrame, false);
   }
-#endif
 
   // Creates NativeWindow.
   window_.reset(NativeWindow::Create(

shell/browser/api/electron_api_web_contents.cc

@@ -91,6 +91,8 @@
 #include "shell/browser/electron_navigation_throttle.h"
 #include "shell/browser/file_select_helper.h"
 #include "shell/browser/native_window.h"
+#include "shell/browser/osr/osr_render_widget_host_view.h"
+#include "shell/browser/osr/osr_web_contents_view.h"
 #include "shell/browser/session_preferences.h"
 #include "shell/browser/ui/drag_util.h"
 #include "shell/browser/ui/file_dialog.h"
@@ -140,11 +142,6 @@
 #include "ui/display/screen.h"
 #include "ui/events/base_event_utils.h"
 
-#if BUILDFLAG(ENABLE_OSR)
-#include "shell/browser/osr/osr_render_widget_host_view.h"
-#include "shell/browser/osr/osr_web_contents_view.h"
-#endif
-
 #if BUILDFLAG(IS_WIN)
 #include "shell/browser/native_window_views.h"
 #endif
@@ -350,10 +347,8 @@ struct Converter<electron::api::WebContents::Type> {
       *out = Type::kBrowserView;
     } else if (type == "webview") {
       *out = Type::kWebView;
-#if BUILDFLAG(ENABLE_OSR)
     } else if (type == "offscreen") {
       *out = Type::kOffScreen;
-#endif
     } else {
       return false;
     }
@@ -845,11 +840,9 @@ WebContents::WebContents(v8::Isolate* isolate,
   // Get type
   options.Get("type", &type_);
 
-#if BUILDFLAG(ENABLE_OSR)
   bool b = false;
   if (options.Get(options::kOffscreen, &b) && b)
     type_ = Type::kOffScreen;
-#endif
 
   // Init embedder earlier
   options.Get("embedder", &embedder_);
@@ -886,7 +879,6 @@ WebContents::WebContents(v8::Isolate* isolate,
         std::make_unique<WebViewGuestDelegate>(embedder_->web_contents(), this);
     params.guest_delegate = guest_delegate_.get();
 
-#if BUILDFLAG(ENABLE_OSR)
     if (embedder_ && embedder_->IsOffScreen()) {
       auto* view = new OffScreenWebContentsView(
           false,
@@ -897,9 +889,7 @@ WebContents::WebContents(v8::Isolate* isolate,
       web_contents = content::WebContents::Create(params);
       view->SetWebContents(web_contents.get());
     } else {
-#endif
       web_contents = content::WebContents::Create(params);
-#if BUILDFLAG(ENABLE_OSR)
     }
   } else if (IsOffScreen()) {
     // webPreferences does not have a transparent option, so if the window needs
@@ -918,7 +908,6 @@ WebContents::WebContents(v8::Isolate* isolate,
 
     web_contents = content::WebContents::Create(params);
     view->SetWebContents(web_contents.get());
-#endif
   } else {
     content::WebContents::CreateParams params(session->browser_context());
     params.initially_hidden = !initially_shown;
@@ -2304,11 +2293,9 @@ void WebContents::SetOwnerWindow(content::WebContents* web_contents,
     owner_window_ = nullptr;
     web_contents->RemoveUserData(NativeWindowRelay::UserDataKey());
   }
-#if BUILDFLAG(ENABLE_OSR)
   auto* osr_wcv = GetOffScreenWebContentsView();
   if (osr_wcv)
     osr_wcv->SetNativeWindow(owner_window);
-#endif
 }
 
 content::WebContents* WebContents::GetWebContents() const {
@@ -3330,9 +3317,7 @@ void WebContents::SendInputEvent(v8::Isolate* isolate,
     blink::WebMouseEvent mouse_event;
     if (gin::ConvertFromV8(isolate, input_event, &mouse_event)) {
       if (IsOffScreen()) {
-#if BUILDFLAG(ENABLE_OSR)
         GetOffScreenRenderWidgetHostView()->SendMouseEvent(mouse_event);
-#endif
       } else {
         rwh->ForwardMouseEvent(mouse_event);
       }
@@ -3353,10 +3338,8 @@ void WebContents::SendInputEvent(v8::Isolate* isolate,
     blink::WebMouseWheelEvent mouse_wheel_event;
     if (gin::ConvertFromV8(isolate, input_event, &mouse_wheel_event)) {
       if (IsOffScreen()) {
-#if BUILDFLAG(ENABLE_OSR)
         GetOffScreenRenderWidgetHostView()->SendMouseWheelEvent(
             mouse_wheel_event);
-#endif
       } else {
         // Chromium expects phase info in wheel events (and applies a
         // DCHECK to verify it). See: https://crbug.com/756524.
@@ -3524,14 +3507,9 @@ void WebContents::AttachToIframe(content::WebContents* embedder_web_contents,
 }
 
 bool WebContents::IsOffScreen() const {
-#if BUILDFLAG(ENABLE_OSR)
   return type_ == Type::kOffScreen;
-#else
-  return false;
-#endif
 }
 
-#if BUILDFLAG(ENABLE_OSR)
 void WebContents::OnPaint(const gfx::Rect& dirty_rect, const SkBitmap& bitmap) {
   Emit("paint", dirty_rect, gfx::Image::CreateFrom1xBitmap(bitmap));
 }
@@ -3563,15 +3541,12 @@ int WebContents::GetFrameRate() const {
   auto* osr_wcv = GetOffScreenWebContentsView();
   return osr_wcv ? osr_wcv->GetFrameRate() : 0;
 }
-#endif
 
 void WebContents::Invalidate() {
   if (IsOffScreen()) {
-#if BUILDFLAG(ENABLE_OSR)
     auto* osr_rwhv = GetOffScreenRenderWidgetHostView();
     if (osr_rwhv)
       osr_rwhv->Invalidate();
-#endif
   } else {
     auto* const window = owner_window();
     if (window)
@@ -4301,13 +4276,11 @@ void WebContents::FillObjectTemplate(v8::Isolate* isolate,
       .SetMethod("attachToIframe", &WebContents::AttachToIframe)
       .SetMethod("detachFromOuterFrame", &WebContents::DetachFromOuterFrame)
       .SetMethod("isOffscreen", &WebContents::IsOffScreen)
-#if BUILDFLAG(ENABLE_OSR)
       .SetMethod("startPainting", &WebContents::StartPainting)
       .SetMethod("stopPainting", &WebContents::StopPainting)
       .SetMethod("isPainting", &WebContents::IsPainting)
       .SetMethod("setFrameRate", &WebContents::SetFrameRate)
       .SetMethod("getFrameRate", &WebContents::GetFrameRate)
-#endif
       .SetMethod("invalidate", &WebContents::Invalidate)
       .SetMethod("setZoomLevel", &WebContents::SetZoomLevel)
       .SetMethod("getZoomLevel", &WebContents::GetZoomLevel)

shell/browser/api/electron_api_web_contents.h

@@ -91,11 +91,8 @@ class WebViewGuestDelegate;
 class FrameSubscriber;
 class WebDialogHelper;
 class NativeWindow;
-
-#if BUILDFLAG(ENABLE_OSR)
 class OffScreenRenderWidgetHostView;
 class OffScreenWebContentsView;
-#endif
 
 namespace api {
 
@@ -285,14 +282,12 @@ class WebContents : public ExclusiveAccessContext,
 
   // Methods for offscreen rendering
   bool IsOffScreen() const;
-#if BUILDFLAG(ENABLE_OSR)
   void OnPaint(const gfx::Rect& dirty_rect, const SkBitmap& bitmap);
   void StartPainting();
   void StopPainting();
   bool IsPainting() const;
   void SetFrameRate(int frame_rate);
   int GetFrameRate() const;
-#endif
   void Invalidate();
   gfx::Size GetSizeForNewRenderView(content::WebContents*) override;
 
@@ -653,10 +648,8 @@ class WebContents : public ExclusiveAccessContext,
 
   void OnElectronBrowserConnectionError();
 
-#if BUILDFLAG(ENABLE_OSR)
   OffScreenWebContentsView* GetOffScreenWebContentsView() const;
   OffScreenRenderWidgetHostView* GetOffScreenRenderWidgetHostView() const;
-#endif
 
   // Called when received a synchronous message from renderer to
   // get the zoom level.

shell/browser/api/electron_api_web_contents_impl.cc

@@ -7,11 +7,8 @@
 #include "content/browser/renderer_host/frame_tree.h"        // nogncheck
 #include "content/browser/renderer_host/frame_tree_node.h"   // nogncheck
 #include "content/browser/web_contents/web_contents_impl.h"  // nogncheck
-
-#if BUILDFLAG(ENABLE_OSR)
 #include "shell/browser/osr/osr_render_widget_host_view.h"
 #include "shell/browser/osr/osr_web_contents_view.h"
-#endif
 
 // Including both web_contents_impl.h and node.h would introduce a error, we
 // have to isolate the usage of WebContentsImpl into a clean file to fix it:
@@ -31,7 +28,6 @@ void WebContents::DetachFromOuterFrame() {
   }
 }
 
-#if BUILDFLAG(ENABLE_OSR)
 OffScreenWebContentsView* WebContents::GetOffScreenWebContentsView() const {
   if (IsOffScreen()) {
     const auto* impl =
@@ -51,6 +47,5 @@ OffScreenRenderWidgetHostView* WebContents::GetOffScreenRenderWidgetHostView()
     return nullptr;
   }
 }
-#endif
 
 }  // namespace electron::api

shell/browser/ui/autofill_popup.cc

@@ -12,6 +12,8 @@
 #include "electron/buildflags/buildflags.h"
 #include "mojo/public/cpp/bindings/associated_remote.h"
 #include "shell/browser/native_window_views.h"
+#include "shell/browser/osr/osr_render_widget_host_view.h"
+#include "shell/browser/osr/osr_view_proxy.h"
 #include "shell/browser/ui/autofill_popup.h"
 #include "shell/common/api/api.mojom.h"
 #include "third_party/blink/public/common/associated_interfaces/associated_interface_provider.h"
@@ -25,11 +27,6 @@
 #include "ui/gfx/geometry/vector2d.h"
 #include "ui/gfx/text_utils.h"
 
-#if BUILDFLAG(ENABLE_OSR)
-#include "shell/browser/osr/osr_render_widget_host_view.h"
-#include "shell/browser/osr/osr_view_proxy.h"
-#endif
-
 namespace electron {
 
 namespace {
@@ -194,7 +191,6 @@ void AutofillPopup::CreateView(content::RenderFrameHost* frame_host,
 
   view_ = new AutofillPopupView(this, parent->GetWidget());
 
-#if BUILDFLAG(ENABLE_OSR)
   if (offscreen) {
     auto* rwhv = frame_host->GetView();
     if (embedder_frame_host != nullptr) {
@@ -205,7 +201,6 @@ void AutofillPopup::CreateView(content::RenderFrameHost* frame_host,
     view_->view_proxy_ = std::make_unique<OffscreenViewProxy>(view_);
     osr_rwhv->AddViewProxy(view_->view_proxy_.get());
   }
-#endif
 
   // Do this after OSR setup, we check for view_proxy_ when showing
   view_->Show();

shell/browser/ui/views/autofill_popup_view.cc

@@ -48,11 +48,9 @@ AutofillPopupView::~AutofillPopupView() {
 
   RemoveObserver();
 
-#if BUILDFLAG(ENABLE_OSR)
   if (view_proxy_.get()) {
     view_proxy_->ResetView();
   }
-#endif
 
   if (GetWidget()) {
     GetWidget()->Close();
@@ -61,9 +59,7 @@ AutofillPopupView::~AutofillPopupView() {
 
 void AutofillPopupView::Show() {
   bool visible = parent_widget_->IsVisible();
-#if BUILDFLAG(ENABLE_OSR)
   visible = visible || view_proxy_;
-#endif
   if (!popup_ || !visible || parent_widget_->IsClosed())
     return;
 
@@ -228,11 +224,9 @@ void AutofillPopupView::DoUpdateBoundsAndRedrawPopup() {
   popup_->popup_bounds_.Union(
       gfx::Rect(popup_->popup_bounds_.origin(), gfx::Size(1, 1)));
   GetWidget()->SetBounds(popup_->popup_bounds_);
-#if BUILDFLAG(ENABLE_OSR)
   if (view_proxy_.get()) {
     view_proxy_->SetBounds(popup_->popup_bounds_in_view());
   }
-#endif
   SchedulePaint();
 }
 
@@ -243,7 +237,6 @@ void AutofillPopupView::OnPaint(gfx::Canvas* canvas) {
   gfx::Canvas* draw_canvas = canvas;
   SkBitmap bitmap;
 
-#if BUILDFLAG(ENABLE_OSR)
   std::unique_ptr<cc::SkiaPaintCanvas> paint_canvas;
   if (view_proxy_.get()) {
     bitmap.allocN32Pixels(popup_->popup_bounds_in_view().width(),
@@ -251,7 +244,6 @@ void AutofillPopupView::OnPaint(gfx::Canvas* canvas) {
     paint_canvas = std::make_unique<cc::SkiaPaintCanvas>(bitmap);
     draw_canvas = new gfx::Canvas(paint_canvas.get(), 1.0);
   }
-#endif
 
   draw_canvas->DrawColor(
       GetColorProvider()->GetColor(ui::kColorResultsTableNormalBackground));
@@ -263,12 +255,10 @@ void AutofillPopupView::OnPaint(gfx::Canvas* canvas) {
     DrawAutofillEntry(draw_canvas, i, line_rect);
   }
 
-#if BUILDFLAG(ENABLE_OSR)
   if (view_proxy_.get()) {
     view_proxy_->SetBounds(popup_->popup_bounds_in_view());
     view_proxy_->SetBitmap(bitmap);
   }
-#endif
 }
 
 void AutofillPopupView::GetAccessibleNodeData(ui::AXNodeData* node_data) {

shell/browser/ui/views/autofill_popup_view.h

@@ -13,6 +13,7 @@
 #include "content/public/browser/native_web_keyboard_event.h"
 #include "content/public/browser/render_widget_host.h"
 #include "electron/buildflags/buildflags.h"
+#include "shell/browser/osr/osr_view_proxy.h"
 #include "third_party/abseil-cpp/absl/types/optional.h"
 #include "ui/accessibility/ax_node_data.h"
 #include "ui/views/drag_controller.h"
@@ -20,10 +21,6 @@
 #include "ui/views/widget/widget_delegate.h"
 #include "ui/views/widget/widget_observer.h"
 
-#if BUILDFLAG(ENABLE_OSR)
-#include "shell/browser/osr/osr_view_proxy.h"
-#endif
-
 namespace electron {
 
 const int kPopupBorderThickness = 1;
@@ -142,9 +139,7 @@ class AutofillPopupView : public views::WidgetDelegateView,
   // The index of the currently selected line
   absl::optional<int> selected_line_;
 
-#if BUILDFLAG(ENABLE_OSR)
   std::unique_ptr<OffscreenViewProxy> view_proxy_;
-#endif
 
   // The registered keypress callback, responsible for switching lines on
   // key presses

shell/common/api/features.cc

@@ -13,10 +13,6 @@ bool IsBuiltinSpellCheckerEnabled() {
   return BUILDFLAG(ENABLE_BUILTIN_SPELLCHECKER);
 }
 
-bool IsOffscreenRenderingEnabled() {
-  return BUILDFLAG(ENABLE_OSR);
-}
-
 bool IsPDFViewerEnabled() {
   return BUILDFLAG(ENABLE_PDF_VIEWER);
 }
@@ -51,7 +47,6 @@ void Initialize(v8::Local<v8::Object> exports,
                 void* priv) {
   gin_helper::Dictionary dict(context->GetIsolate(), exports);
   dict.SetMethod("isBuiltinSpellCheckerEnabled", &IsBuiltinSpellCheckerEnabled);
-  dict.SetMethod("isOffscreenRenderingEnabled", &IsOffscreenRenderingEnabled);
   dict.SetMethod("isPDFViewerEnabled", &IsPDFViewerEnabled);
   dict.SetMethod("isFakeLocationProviderEnabled",
                  &IsFakeLocationProviderEnabled);

spec/api-browser-window-spec.ts

@@ -15,7 +15,6 @@ import { areColorsSimilar, captureScreen, HexColors, getPixelColor } from './lib
 import { once } from 'events';
 import { setTimeout } from 'timers/promises';
 
-const features = process._linkedBinding('electron_common_features');
 const fixtures = path.resolve(__dirname, 'fixtures');
 const mainFixtures = path.resolve(__dirname, 'fixtures');
 
@@ -6071,7 +6070,7 @@ describe('BrowserWindow module', () => {
     });
   });
 
-  ifdescribe(features.isOffscreenRenderingEnabled())('offscreen rendering', () => {
+  describe('offscreen rendering', () => {
     let w: BrowserWindow;
     beforeEach(function () {
       w = new BrowserWindow({

typings/internal-ambient.d.ts

@@ -5,7 +5,6 @@ declare const ENABLE_VIEWS_API: boolean;
 declare namespace NodeJS {
   interface FeaturesBinding {
     isBuiltinSpellCheckerEnabled(): boolean;
-    isOffscreenRenderingEnabled(): boolean;
     isPDFViewerEnabled(): boolean;
     isFakeLocationProviderEnabled(): boolean;
     isViewApiEnabled(): boolean;