cc: Remove BeginFrameSourcesConstructor.

cc/surfaces/onscreen_display_client.h

Index: cc/surfaces/onscreen_display_client.h
diff --git a/cc/surfaces/onscreen_display_client.h b/cc/surfaces/onscreen_display_client.h
index ec147df80af37e56bcf74603ef3d78563a93b027..5769595c03676b905d2d0aee63cd9f69743b9ed9 100644
--- a/cc/surfaces/onscreen_display_client.h
+++ b/cc/surfaces/onscreen_display_client.h
@@ -28,13 +28,12 @@ class SurfaceDisplayOutputSurface;
 class CC_SURFACES_EXPORT OnscreenDisplayClient
     : NON_EXPORTED_BASE(DisplayClient) {
  public:
-  OnscreenDisplayClient(
-      scoped_ptr<OutputSurface> output_surface,
-      SurfaceManager* manager,
-      SharedBitmapManager* bitmap_manager,
-      gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager,
-      const RendererSettings& settings,
-      scoped_refptr<base::SingleThreadTaskRunner> task_runner);
+  OnscreenDisplayClient(scoped_ptr<OutputSurface> output_surface,
+                        SurfaceManager* manager,
+                        SharedBitmapManager* bitmap_manager,
+                        gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager,
+                        const RendererSettings& settings,
+                        base::SingleThreadTaskRunner* task_runner);
   ~OnscreenDisplayClient() override;
 
   bool Initialize();
@@ -54,10 +53,10 @@ class CC_SURFACES_EXPORT OnscreenDisplayClient
  protected:
   scoped_ptr<OutputSurface> output_surface_;
   scoped_ptr<Display> display_;
-  VSyncParameterObserver* vsync_observer_;
-  scoped_ptr<BeginFrameSource> begin_frame_source_;
+  scoped_ptr<SyntheticBeginFrameSource> synthetic_frame_source_;
+  scoped_ptr<BackToBackBeginFrameSource> unthrottled_frame_source_;
   scoped_ptr<DisplayScheduler> scheduler_;
-  scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
+  base::SingleThreadTaskRunner* task_runner_;
   SurfaceDisplayOutputSurface* surface_display_output_surface_;
   bool output_surface_lost_;
   bool disable_gpu_vsync_;