Hook up ui::Compositor to Display's BeginFrameSource

content/browser/compositor/gpu_process_transport_factory.cc

Index: content/browser/compositor/gpu_process_transport_factory.cc
diff --git a/content/browser/compositor/gpu_process_transport_factory.cc b/content/browser/compositor/gpu_process_transport_factory.cc
index 01dcecdb1df43eddbaee37febe53d3a0450cb1ec..23674cf92f7091aa098b191b0ceffecf55509063 100644
--- a/content/browser/compositor/gpu_process_transport_factory.cc
+++ b/content/browser/compositor/gpu_process_transport_factory.cc
@@ -324,10 +324,14 @@ void GpuProcessTransportFactory::EstablishedGpuChannel(
   }
 
   scoped_ptr<BrowserCompositorOutputSurface> surface;
+  scoped_ptr<cc::SyntheticBeginFrameSource> synthetic_begin_frame_source =
+      cc::SyntheticBeginFrameSource::Create(
+          compositor->task_runner().get(),
+          cc::BeginFrameArgs::DefaultInterval());
   if (!create_gpu_output_surface) {
     surface = make_scoped_ptr(new SoftwareBrowserCompositorOutputSurface(
         CreateSoftwareOutputDevice(compositor.get()),
-        compositor->vsync_manager()));
+        compositor->vsync_manager(), std::move(synthetic_begin_frame_source)));
   } else {
     DCHECK(context_provider);
     ContextProvider::Capabilities capabilities =
@@ -335,7 +339,7 @@ void GpuProcessTransportFactory::EstablishedGpuChannel(
     if (!data->surface_id) {
       surface = make_scoped_ptr(new OffscreenBrowserCompositorOutputSurface(
           context_provider, shared_worker_context_provider_,
-          compositor->vsync_manager(),
+          compositor->vsync_manager(), std::move(synthetic_begin_frame_source),
           scoped_ptr<BrowserCompositorOverlayCandidateValidator>()));
     } else if (capabilities.gpu.surfaceless) {
       GLenum target = GL_TEXTURE_2D;
@@ -348,6 +352,7 @@ void GpuProcessTransportFactory::EstablishedGpuChannel(
           make_scoped_ptr(new GpuSurfacelessBrowserCompositorOutputSurface(
               context_provider, shared_worker_context_provider_,
               data->surface_id, compositor->vsync_manager(),
+              std::move(synthetic_begin_frame_source),
               CreateOverlayCandidateValidator(compositor->widget()), target,
               format, BrowserGpuMemoryBufferManager::current()));
     } else {
@@ -358,7 +363,8 @@ void GpuProcessTransportFactory::EstablishedGpuChannel(
 #endif
       surface = make_scoped_ptr(new GpuBrowserCompositorOutputSurface(
           context_provider, shared_worker_context_provider_,
-          compositor->vsync_manager(), std::move(validator)));
+          compositor->vsync_manager(), std::move(synthetic_begin_frame_source),
+          std::move(validator)));
     }
   }