Hook up ui::Compositor to Display's BeginFrameSource

content/browser/compositor/gpu_process_transport_factory.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/compositor/gpu_process_transport_factory.h"
 
 #include <string>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 306 matching lines @@
           CAUSE_FOR_GPU_LAUNCH_WEBGRAPHICSCONTEXT3DCOMMANDBUFFERIMPL_INITIALIZE;
       BrowserGpuChannelHostFactory::instance()->EstablishGpuChannel(
           cause, base::Bind(&GpuProcessTransportFactory::EstablishedGpuChannel,
                             callback_factory_.GetWeakPtr(), compositor,
                             create_gpu_output_surface, num_attempts + 1));
       return;
     }
   }
 
   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 =
         context_provider->ContextCapabilities();
     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;
       GLenum format = GL_RGB;
 #if defined(OS_MACOSX)
       target = GL_TEXTURE_RECTANGLE_ARB;
       format = GL_BGRA_EXT;
 #endif
       surface =
           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 {
       scoped_ptr<BrowserCompositorOverlayCandidateValidator> validator;
 #if !defined(OS_MACOSX)
       // Overlays are only supported on surfaceless output surfaces on Mac.
       validator = CreateOverlayCandidateValidator(compositor->widget());
 #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)));
     }
   }
 
   // TODO(piman): Use GpuSurfaceTracker to map ids to surfaces instead of an
   // output_surface_map_ here.
   output_surface_map_.AddWithID(surface.get(), data->surface_id);
   data->surface = surface.get();
   if (data->reflector)
     data->reflector->OnSourceSurfaceReady(data->surface);
 
@@ skipping 286 matching lines @@
   FOR_EACH_OBSERVER(ImageTransportFactoryObserver,
                     observer_list_,
                     OnLostResources());
 
   // Kill things that use the shared context before killing the shared context.
   lost_gl_helper.reset();
   lost_shared_main_thread_contexts  = NULL;
 }
 
 }  // namespace content