Hook up BeginFrameSource to SurfaceFactoryClient via SurfaceManager

cc/surfaces/display.h

Index: cc/surfaces/display.h
diff --git a/cc/surfaces/display.h b/cc/surfaces/display.h
index 6c29dc86d9901b8d8c94463364d6b9c54cc84a6e..4646179d0a4d0cd010f32b66f5fd7d06237415ed 100644
--- a/cc/surfaces/display.h
+++ b/cc/surfaces/display.h
@@ -49,7 +49,6 @@ class TextureMailboxDeleter;
 class CC_SURFACES_EXPORT Display : public DisplaySchedulerClient,
                                    public OutputSurfaceClient,
                                    public RendererClient,
-                                   public SurfaceAggregatorClient,
                                    public SurfaceDamageObserver {
  public:
   Display(DisplayClient* client,
@@ -70,10 +69,6 @@ class CC_SURFACES_EXPORT Display : public DisplaySchedulerClient,
 
   SurfaceId CurrentSurfaceId();
 
-  // SurfaceAggregatorClient implementation
-  void AddSurface(Surface* surface) override;
-  void RemoveSurface(Surface* surface) override;
-
   // DisplaySchedulerClient implementation.
   bool DrawAndSwap() override;