Moves ownership of the cc::Display's BeginFrameSource out of Display.

cc/surfaces/display_scheduler.h

 // Copyright 2015 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.
 
 #ifndef CC_SURFACES_DISPLAY_SCHEDULER_H_
 #define CC_SURFACES_DISPLAY_SCHEDULER_H_
 
 #include <memory>
 
 #include "base/cancelable_callback.h"
@@ skipping 11 matching lines @@
 
 class CC_SURFACES_EXPORT DisplaySchedulerClient {
  public:
   virtual ~DisplaySchedulerClient() {}
 
   virtual bool DrawAndSwap() = 0;
 };
 
 class CC_SURFACES_EXPORT DisplayScheduler : public BeginFrameObserverBase {
  public:
-  DisplayScheduler(BeginFrameSource* begin_frame_source,
-                   base::SingleThreadTaskRunner* task_runner,
+  DisplayScheduler(base::SingleThreadTaskRunner* task_runner,
                    int max_pending_swaps);
   ~DisplayScheduler() override;
 
   void SetClient(DisplaySchedulerClient* client);
+  void SetBeginFrameSource(BeginFrameSource* begin_frame_source);
 
   void SetVisible(bool visible);
   void SetRootSurfaceResourcesLocked(bool locked);
   void ForceImmediateSwapIfPossible();
   virtual void DisplayResized();
   virtual void SetNewRootSurface(const SurfaceId& root_surface_id);
   virtual void SurfaceDamaged(const SurfaceId& surface_id);
 
   virtual void DidSwapBuffers();
   void DidReceiveSwapBuffersAck();
@@ skipping 50 matching lines @@
 
   base::WeakPtrFactory<DisplayScheduler> weak_ptr_factory_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(DisplayScheduler);
 };
 
 }  // namespace cc
 
 #endif  // CC_SURFACES_DISPLAY_SCHEDULER_H_