fix: update and enable osr (#15046)

* fix: update and enable osr

* fix: update MacHelper view to call GetNativeView

* style: move stuff around to make more sense

* chore: move OSR related things in SetOwnerWindow to CommonWebContentsDelegate

* fix: avoid crashing when GetOffscreenRenderWidgetHostView is called

* fix: specify default for current_device_scale_factor_

atom/browser/api/atom_api_web_contents.h

@@ -52,7 +52,6 @@ class FrameSubscriber;
 
 #if BUILDFLAG(ENABLE_OSR)
 class OffScreenWebContentsView;
-class OffScreenRenderWidgetHostView;
 #endif
 
 namespace api {
@@ -425,7 +424,8 @@ class WebContents : public mate::TrackableObject<WebContents>,
 
 #if BUILDFLAG(ENABLE_OSR)
   OffScreenWebContentsView* GetOffScreenWebContentsView() const;
-  OffScreenRenderWidgetHostView* GetOffScreenRenderWidgetHostView() const;
+  OffScreenRenderWidgetHostView* GetOffScreenRenderWidgetHostView()
+      const override;
 #endif
 
   // Called when we receive a CursorChange message from chromium.

atom/browser/api/atom_api_web_contents_osr.cc

@@ -17,15 +17,23 @@ namespace atom {
 namespace api {
 
 OffScreenWebContentsView* WebContents::GetOffScreenWebContentsView() const {
-  const auto* impl =
+  if (IsOffScreen()) {
-      static_cast<const content::WebContentsImpl*>(web_contents());
+    const auto* impl =
-  return static_cast<OffScreenWebContentsView*>(impl->GetView());
+        static_cast<const content::WebContentsImpl*>(web_contents());
+    return static_cast<OffScreenWebContentsView*>(impl->GetView());
+  } else {
+    return nullptr;
+  }
 }
 
 OffScreenRenderWidgetHostView* WebContents::GetOffScreenRenderWidgetHostView()
     const {
-  return static_cast<OffScreenRenderWidgetHostView*>(
+  if (IsOffScreen()) {
-      web_contents()->GetRenderWidgetHostView());
+    return static_cast<OffScreenRenderWidgetHostView*>(
+        web_contents()->GetRenderWidgetHostView());
+  } else {
+    return nullptr;
+  }
 }
 
 }  // namespace api

atom/browser/common_web_contents_delegate.cc

@@ -30,6 +30,7 @@
 #include "components/prefs/scoped_user_pref_update.h"
 #include "components/security_state/content/content_utils.h"
 #include "components/security_state/core/security_state.h"
+#include "content/browser/renderer_host/render_widget_host_view_base.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/child_process_security_policy.h"
 #include "content/public/browser/render_process_host.h"
@@ -39,6 +40,10 @@
 #include "content/public/browser/security_style_explanations.h"
 #include "storage/browser/fileapi/isolated_context.h"
 
+#if BUILDFLAG(ENABLE_OSR)
+#include "atom/browser/osr/osr_render_widget_host_view.h"
+#endif
+
 using content::BrowserThread;
 
 namespace atom {
@@ -201,6 +206,11 @@ void CommonWebContentsDelegate::SetOwnerWindow(
     web_contents->RemoveUserData(
         NativeWindowRelay::kNativeWindowRelayUserDataKey);
   }
+#if BUILDFLAG(ENABLE_OSR)
+  auto* osr_rwhv = GetOffScreenRenderWidgetHostView();
+  if (osr_rwhv)
+    osr_rwhv->SetNativeWindow(owner_window);
+#endif
 }
 
 void CommonWebContentsDelegate::ResetManagedWebContents(bool async) {
@@ -236,6 +246,13 @@ content::WebContents* CommonWebContentsDelegate::GetDevToolsWebContents()
   return web_contents_->GetDevToolsWebContents();
 }
 
+#if BUILDFLAG(ENABLE_OSR)
+OffScreenRenderWidgetHostView*
+CommonWebContentsDelegate::GetOffScreenRenderWidgetHostView() const {
+  return nullptr;
+}
+#endif
+
 content::WebContents* CommonWebContentsDelegate::OpenURLFromTab(
     content::WebContents* source,
     const content::OpenURLParams& params) {

atom/browser/common_web_contents_delegate.h

@@ -16,6 +16,7 @@
 #include "brightray/browser/inspectable_web_contents_view_delegate.h"
 #include "chrome/browser/devtools/devtools_file_system_indexer.h"
 #include "content/public/browser/web_contents_delegate.h"
+#include "electron/buildflags/buildflags.h"
 
 #if defined(TOOLKIT_VIEWS) && !defined(OS_MACOSX)
 #include "atom/browser/ui/autofill_popup.h"
@@ -31,6 +32,10 @@ class AtomBrowserContext;
 class NativeWindow;
 class WebDialogHelper;
 
+#if BUILDFLAG(ENABLE_OSR)
+class OffScreenRenderWidgetHostView;
+#endif
+
 class CommonWebContentsDelegate
     : public content::WebContentsDelegate,
       public brightray::InspectableWebContentsDelegate,
@@ -65,6 +70,11 @@ class CommonWebContentsDelegate
   bool is_html_fullscreen() const { return html_fullscreen_; }
 
  protected:
+#if BUILDFLAG(ENABLE_OSR)
+  virtual OffScreenRenderWidgetHostView* GetOffScreenRenderWidgetHostView()
+      const;
+#endif
+
   // content::WebContentsDelegate:
   content::WebContents* OpenURLFromTab(
       content::WebContents* source,

atom/browser/osr/osr_render_widget_host_view.cc

@@ -19,6 +19,7 @@
 #include "components/viz/common/frame_sinks/delay_based_time_source.h"
 #include "components/viz/common/gl_helper.h"
 #include "components/viz/common/quads/render_pass.h"
+#include "content/browser/renderer_host/cursor_manager.h"
 #include "content/browser/renderer_host/render_widget_host_delegate.h"
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 #include "content/common/view_messages.h"
@@ -264,9 +265,10 @@ OffScreenRenderWidgetHostView::OffScreenRenderWidgetHostView(
       callback_(callback),
       frame_rate_(frame_rate),
       scale_factor_(kDefaultScaleFactor),
-      size_(native_window->GetSize()),
+      size_(native_window ? native_window->GetSize() : gfx::Size()),
       painting_(painting),
       is_showing_(!render_widget_host_->is_hidden()),
+      cursor_manager_(new content::CursorManager(this)),
       mouse_wheel_phase_handler_(this),
       weak_ptr_factory_(this) {
   DCHECK(render_widget_host_);
@@ -280,6 +282,8 @@ OffScreenRenderWidgetHostView::OffScreenRenderWidgetHostView(
   root_layer_.reset(new ui::Layer(ui::LAYER_SOLID_COLOR));
 #endif
 
+  current_device_scale_factor_ = 1;
+
   local_surface_id_ = local_surface_id_allocator_.GenerateId();
 
 #if defined(OS_MACOSX)
@@ -308,7 +312,8 @@ OffScreenRenderWidgetHostView::OffScreenRenderWidgetHostView(
 #endif
   GetCompositor()->SetDelegate(this);
 
-  native_window_->AddObserver(this);
+  if (native_window_)
+    native_window_->AddObserver(this);
 
   ResizeRootLayer(false);
   render_widget_host_->SetView(this);
@@ -351,13 +356,15 @@ OffScreenRenderWidgetHostView::CreateBrowserAccessibilityManager(
 
 void OffScreenRenderWidgetHostView::OnWindowResize() {
   // In offscreen mode call RenderWidgetHostView's SetSize explicitly
-  auto size = native_window_->GetSize();
+  auto size = native_window_ ? native_window_->GetSize() : gfx::Size();
   SetSize(size);
 }
 
 void OffScreenRenderWidgetHostView::OnWindowClosed() {
-  native_window_->RemoveObserver(this);
+  if (native_window_) {
-  native_window_ = nullptr;
+    native_window_->RemoveObserver(this);
+    native_window_ = nullptr;
+  }
 }
 
 void OffScreenRenderWidgetHostView::OnBeginFrameTimerTick() {
@@ -445,12 +452,12 @@ void OffScreenRenderWidgetHostView::Show() {
   browser_compositor_->SetRenderWidgetHostIsHidden(false);
 #else
   delegated_frame_host_->SetCompositor(compositor_.get());
-  delegated_frame_host_->WasShown(
+  delegated_frame_host_->WasShown(GetLocalSurfaceId(),
-      GetLocalSurfaceId(), GetRootLayer()->bounds().size(), ui::LatencyInfo());
+                                  GetRootLayer()->bounds().size(), false);
 #endif
 
   if (render_widget_host_)
-    render_widget_host_->WasShown(ui::LatencyInfo());
+    render_widget_host_->WasShown(false);
 }
 
 void OffScreenRenderWidgetHostView::Hide() {
@@ -628,6 +635,10 @@ void OffScreenRenderWidgetHostView::InitAsFullscreen(
 
 void OffScreenRenderWidgetHostView::UpdateCursor(const content::WebCursor&) {}
 
+content::CursorManager* OffScreenRenderWidgetHostView::GetCursorManager() {
+  return cursor_manager_.get();
+}
+
 void OffScreenRenderWidgetHostView::SetIsLoading(bool loading) {}
 
 void OffScreenRenderWidgetHostView::TextInputStateChanged(
@@ -727,10 +738,6 @@ gfx::Size OffScreenRenderWidgetHostView::GetCompositorViewportPixelSize()
   return gfx::ScaleToCeiledSize(GetRequestedRendererSize(), scale_factor_);
 }
 
-gfx::Size OffScreenRenderWidgetHostView::GetRequestedRendererSize() const {
-  return GetDelegatedFrameHost()->GetRequestedRendererSize();
-}
-
 content::RenderWidgetHostViewBase*
 OffScreenRenderWidgetHostView::CreateViewForWidget(
     content::RenderWidgetHost* render_widget_host,
@@ -783,13 +790,14 @@ void OffScreenRenderWidgetHostView::DidReceiveFirstFrameAfterNavigation() {
   render_widget_host_->DidReceiveFirstFrameAfterNavigation();
 }
 
-viz::LocalSurfaceId OffScreenRenderWidgetHostView::GetLocalSurfaceId() const {
+const viz::LocalSurfaceId& OffScreenRenderWidgetHostView::GetLocalSurfaceId()
+    const {
   return local_surface_id_;
 }
 
 #endif  // !defined(OS_MACOSX)
 
-viz::FrameSinkId OffScreenRenderWidgetHostView::GetFrameSinkId() {
+const viz::FrameSinkId& OffScreenRenderWidgetHostView::GetFrameSinkId() const {
   return GetDelegatedFrameHost()->frame_sink_id();
 }
 
@@ -1029,7 +1037,7 @@ void OffScreenRenderWidgetHostView::SynchronizeVisualProperties() {
   ResizeRootLayer(false);
   if (render_widget_host_)
     render_widget_host_->SynchronizeVisualProperties();
-  GetDelegatedFrameHost()->SynchronizeVisualProperties(
+  GetDelegatedFrameHost()->EmbedSurface(
       local_surface_id_, size_, cc::DeadlinePolicy::UseDefaultDeadline());
 }
 
@@ -1240,6 +1248,18 @@ void OffScreenRenderWidgetHostView::InvalidateBounds(const gfx::Rect& bounds) {
   }
 }
 
+void OffScreenRenderWidgetHostView::SetNativeWindow(NativeWindow* window) {
+  if (native_window_)
+    native_window_->RemoveObserver(this);
+
+  native_window_ = window;
+
+  if (native_window_)
+    native_window_->AddObserver(this);
+
+  OnWindowResize();
+}
+
 void OffScreenRenderWidgetHostView::ResizeRootLayer(bool force) {
   SetupFrameRate(false);
 
@@ -1269,7 +1289,7 @@ void OffScreenRenderWidgetHostView::ResizeRootLayer(bool force) {
   bool resized = UpdateNSViewAndDisplay();
 #else
   bool resized = true;
-  GetDelegatedFrameHost()->SynchronizeVisualProperties(
+  GetDelegatedFrameHost()->EmbedSurface(
       local_surface_id_, size, cc::DeadlinePolicy::UseDefaultDeadline());
 #endif
 

atom/browser/osr/osr_render_widget_host_view.h

@@ -57,6 +57,10 @@ class NSWindow;
 #endif
 #endif
 
+namespace content {
+class CursorManager;
+}  // namespace content
+
 namespace atom {
 
 class AtomCopyFrameGenerator;
@@ -141,6 +145,7 @@ class OffScreenRenderWidgetHostView : public content::RenderWidgetHostViewBase,
   void RenderProcessGone(base::TerminationStatus, int) override;
   void Destroy(void) override;
   void SetTooltipText(const base::string16&) override;
+  content::CursorManager* GetCursorManager() override;
   void SelectionBoundsChanged(
       const ViewHostMsg_SelectionBounds_Params&) override;
   void CopyFromSurface(
@@ -156,7 +161,11 @@ class OffScreenRenderWidgetHostView : public content::RenderWidgetHostViewBase,
   void ImeCompositionRangeChanged(const gfx::Range&,
                                   const std::vector<gfx::Rect>&) override;
   gfx::Size GetCompositorViewportPixelSize() const override;
-  gfx::Size GetRequestedRendererSize() const override;
+
+#if defined(OS_MACOSX)
+  viz::ScopedSurfaceIdAllocator DidUpdateVisualProperties(
+      const cc::RenderFrameMetadata& metadata) override;
+#endif
 
   content::RenderWidgetHostViewBase* CreateViewForWidget(
       content::RenderWidgetHost*,
@@ -175,8 +184,8 @@ class OffScreenRenderWidgetHostView : public content::RenderWidgetHostViewBase,
   void DidReceiveFirstFrameAfterNavigation() override;
 #endif  // !defined(OS_MACOSX)
 
-  viz::LocalSurfaceId GetLocalSurfaceId() const override;
+  const viz::LocalSurfaceId& GetLocalSurfaceId() const override;
-  viz::FrameSinkId GetFrameSinkId() override;
+  const viz::FrameSinkId& GetFrameSinkId() const override;
 
   void DidNavigate() override;
 
@@ -259,6 +268,7 @@ class OffScreenRenderWidgetHostView : public content::RenderWidgetHostViewBase,
   content::RenderWidgetHostImpl* render_widget_host() const {
     return render_widget_host_;
   }
+  void SetNativeWindow(NativeWindow* window);
   NativeWindow* window() const { return native_window_; }
   gfx::Size size() const { return size_; }
   float scale_factor() const { return scale_factor_; }
@@ -272,6 +282,12 @@ class OffScreenRenderWidgetHostView : public content::RenderWidgetHostViewBase,
   }
 
  private:
+#if defined(OS_MACOSX)
+  display::Display GetDisplay();
+  void OnDidUpdateVisualPropertiesComplete(
+      const cc::RenderFrameMetadata& metadata);
+#endif
+
   void SetupFrameRate(bool force);
   void ResizeRootLayer(bool force);
 
@@ -324,6 +340,8 @@ class OffScreenRenderWidgetHostView : public content::RenderWidgetHostViewBase,
   std::unique_ptr<ui::Compositor> compositor_;
   std::unique_ptr<content::DelegatedFrameHost> delegated_frame_host_;
 
+  std::unique_ptr<content::CursorManager> cursor_manager_;
+
   std::unique_ptr<AtomCopyFrameGenerator> copy_frame_generator_;
   std::unique_ptr<AtomBeginFrameTimer> begin_frame_timer_;
 

atom/browser/osr/osr_render_widget_host_view_mac.mm

@@ -11,21 +11,13 @@
 #include "ui/accelerated_widget_mac/accelerated_widget_mac.h"
 #include "ui/display/screen.h"
 
-namespace {
-
-display::Display GetDisplay() {
-  return display::Screen::GetScreen()->GetDisplayNearestView(nullptr);
-}
-
-}  // namespace
-
 namespace atom {
 
 class MacHelper : public content::BrowserCompositorMacClient,
                   public ui::AcceleratedWidgetMacNSView {
  public:
   explicit MacHelper(OffScreenRenderWidgetHostView* view) : view_(view) {
-    [this->AcceleratedWidgetGetNSView() setWantsLayer:YES];
+    [view_->GetNativeView() setWantsLayer:YES];
   }
 
   virtual ~MacHelper() {}
@@ -48,11 +40,6 @@ class MacHelper : public content::BrowserCompositorMacClient,
     view_->render_widget_host()->DidProcessFrame(frame_token);
   }
 
-  // ui::AcceleratedWidgetMacNSView:
-  NSView* AcceleratedWidgetGetNSView() const override {
-    return [view_->window()->GetNativeWindow() contentView];
-  }
-
   void AcceleratedWidgetCALayerParamsUpdated() override {}
 
   void DidReceiveFirstFrameAfterNavigation() override {
@@ -61,7 +48,22 @@ class MacHelper : public content::BrowserCompositorMacClient,
 
   void DestroyCompositorForShutdown() override {}
 
-  bool SynchronizeVisualProperties() override {
+  bool SynchronizeVisualProperties(
+      const base::Optional<viz::LocalSurfaceId>&
+          child_allocated_local_surface_id) override {
+    auto* browser_compositor = view_->browser_compositor();
+    if (child_allocated_local_surface_id) {
+      browser_compositor->UpdateRendererLocalSurfaceIdFromChild(
+          *child_allocated_local_surface_id);
+    } else {
+      browser_compositor->AllocateNewRendererLocalSurfaceId();
+    }
+
+    if (auto* host = browser_compositor->GetDelegatedFrameHost()) {
+      host->EmbedSurface(browser_compositor->GetRendererLocalSurfaceId(),
+                         browser_compositor->GetRendererSize(),
+                         cc::DeadlinePolicy::UseDefaultDeadline());
+    }
     return view_->render_widget_host()->SynchronizeVisualProperties();
   }
 
@@ -90,8 +92,8 @@ void OffScreenRenderWidgetHostView::CreatePlatformWidget(
     bool is_guest_view_hack) {
   mac_helper_ = new MacHelper(this);
   browser_compositor_.reset(new content::BrowserCompositorMac(
-      mac_helper_, mac_helper_, render_widget_host_->is_hidden(), true,
+      mac_helper_, mac_helper_, render_widget_host_->is_hidden(), GetDisplay(),
-      GetDisplay(), AllocateFrameSinkId(is_guest_view_hack)));
+      AllocateFrameSinkId(is_guest_view_hack)));
 }
 
 void OffScreenRenderWidgetHostView::DestroyPlatformWidget() {
@@ -99,7 +101,48 @@ void OffScreenRenderWidgetHostView::DestroyPlatformWidget() {
   delete mac_helper_;
 }
 
-viz::LocalSurfaceId OffScreenRenderWidgetHostView::GetLocalSurfaceId() const {
+viz::ScopedSurfaceIdAllocator
+OffScreenRenderWidgetHostView::DidUpdateVisualProperties(
+    const cc::RenderFrameMetadata& metadata) {
+  base::OnceCallback<void()> allocation_task = base::BindOnce(
+      base::IgnoreResult(
+          &OffScreenRenderWidgetHostView::OnDidUpdateVisualPropertiesComplete),
+      weak_ptr_factory_.GetWeakPtr(), metadata);
+  return browser_compositor_->GetScopedRendererSurfaceIdAllocator(
+      std::move(allocation_task));
+}
+
+display::Display OffScreenRenderWidgetHostView::GetDisplay() {
+  content::ScreenInfo screen_info;
+  GetScreenInfo(&screen_info);
+
+  // Start with a reasonable display representation.
+  display::Display display =
+      display::Screen::GetScreen()->GetDisplayNearestView(nullptr);
+
+  // Populate attributes based on |screen_info|.
+  display.set_bounds(screen_info.rect);
+  display.set_work_area(screen_info.available_rect);
+  display.set_device_scale_factor(screen_info.device_scale_factor);
+  display.set_color_space(screen_info.color_space);
+  display.set_color_depth(screen_info.depth);
+  display.set_depth_per_component(screen_info.depth_per_component);
+  display.set_is_monochrome(screen_info.is_monochrome);
+  display.SetRotationAsDegree(screen_info.orientation_angle);
+
+  return display;
+}
+
+void OffScreenRenderWidgetHostView::OnDidUpdateVisualPropertiesComplete(
+    const cc::RenderFrameMetadata& metadata) {
+  DCHECK_EQ(current_device_scale_factor_, metadata.device_scale_factor);
+  browser_compositor_->SynchronizeVisualProperties(
+      metadata.device_scale_factor, metadata.viewport_size_in_pixels,
+      metadata.local_surface_id.value_or(viz::LocalSurfaceId()));
+}
+
+const viz::LocalSurfaceId& OffScreenRenderWidgetHostView::GetLocalSurfaceId()
+    const {
   return browser_compositor_->GetRendererLocalSurfaceId();
 }
 

atom/browser/osr/osr_web_contents_view.cc

@@ -42,7 +42,7 @@ gfx::NativeView OffScreenWebContentsView::GetNativeView() const {
   auto* relay = NativeWindowRelay::FromWebContents(web_contents_);
   if (!relay)
     return gfx::NativeView();
-  return relay->window->GetNativeView();
+  return relay->GetNativeWindow()->GetNativeView();
 }
 
 gfx::NativeView OffScreenWebContentsView::GetContentNativeView() const {
@@ -52,7 +52,7 @@ gfx::NativeView OffScreenWebContentsView::GetContentNativeView() const {
   auto* relay = NativeWindowRelay::FromWebContents(web_contents_);
   if (!relay)
     return gfx::NativeView();
-  return relay->window->GetNativeView();
+  return relay->GetNativeWindow()->GetNativeView();
 }
 
 gfx::NativeWindow OffScreenWebContentsView::GetTopLevelNativeWindow() const {
@@ -62,7 +62,7 @@ gfx::NativeWindow OffScreenWebContentsView::GetTopLevelNativeWindow() const {
   auto* relay = NativeWindowRelay::FromWebContents(web_contents_);
   if (!relay)
     return gfx::NativeWindow();
-  return relay->window->GetNativeWindow();
+  return relay->GetNativeWindow()->GetNativeWindow();
 }
 #endif
 
@@ -102,17 +102,14 @@ OffScreenWebContentsView::CreateViewForWidget(
         render_widget_host->GetView());
   }
 
-  auto* relay = NativeWindowRelay::FromWebContents(web_contents_);
   return new OffScreenRenderWidgetHostView(
       transparent_, painting_, GetFrameRate(), callback_, render_widget_host,
-      nullptr, relay->window.get());
+      nullptr, nullptr);
 }
 
 content::RenderWidgetHostViewBase*
 OffScreenWebContentsView::CreateViewForPopupWidget(
     content::RenderWidgetHost* render_widget_host) {
-  auto* relay = NativeWindowRelay::FromWebContents(web_contents_);
-
   content::WebContentsImpl* web_contents_impl =
       static_cast<content::WebContentsImpl*>(web_contents_);
 
@@ -123,9 +120,9 @@ OffScreenWebContentsView::CreateViewForPopupWidget(
                     ->GetRenderWidgetHostView()
               : web_contents_impl->GetRenderWidgetHostView());
 
-  return new OffScreenRenderWidgetHostView(
+  return new OffScreenRenderWidgetHostView(transparent_, true,
-      transparent_, true, view->GetFrameRate(), callback_, render_widget_host,
+                                           view->GetFrameRate(), callback_,
-      view, relay->window.get());
+                                           render_widget_host, view, nullptr);
 }
 
 void OffScreenWebContentsView::SetPageTitle(const base::string16& title) {}
@@ -140,8 +137,11 @@ void OffScreenWebContentsView::RenderViewCreated(
 #endif
 }
 
-void OffScreenWebContentsView::RenderViewSwappedIn(
+void OffScreenWebContentsView::RenderViewReady() {}
-    content::RenderViewHost* host) {}
+
+void OffScreenWebContentsView::RenderViewHostChanged(
+    content::RenderViewHost* old_host,
+    content::RenderViewHost* new_host) {}
 
 void OffScreenWebContentsView::SetOverscrollControllerEnabled(bool enabled) {}
 

atom/browser/osr/osr_web_contents_view.h

@@ -50,7 +50,9 @@ class OffScreenWebContentsView : public content::WebContentsView,
       content::RenderWidgetHost* render_widget_host) override;
   void SetPageTitle(const base::string16& title) override;
   void RenderViewCreated(content::RenderViewHost* host) override;
-  void RenderViewSwappedIn(content::RenderViewHost* host) override;
+  void RenderViewReady() override;
+  void RenderViewHostChanged(content::RenderViewHost* old_host,
+                             content::RenderViewHost* new_host) override;
   void SetOverscrollControllerEnabled(bool enabled) override;
 
 #if defined(OS_MACOSX)

buildflags/buildflags.gni

@@ -8,7 +8,7 @@ declare_args() {
   # Allow running Electron as a node binary.
   enable_run_as_node = true
 
-  enable_osr = false
+  enable_osr = true
 
   enable_view_api = false