cc: Get rid of SurfaceDestroyed and use SurfaceDiscarded instead

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 30 matching lines @@
 
   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,
                               const BeginFrameAck& ack,
                               bool display_damaged);
   void SurfaceCreated(const SurfaceInfo& surface_info);
-  void SurfaceDestroyed(const SurfaceId& surface_id);
+  void SurfaceDiscarded(const SurfaceId& surface_id);
   void SurfaceDamageExpected(const SurfaceId& surface_id,
                              const BeginFrameArgs& args);
 
   virtual void DidSwapBuffers();
   void DidReceiveSwapBuffersAck();
 
   void OutputSurfaceLost();
 
   // BeginFrameObserverBase implementation
   bool OnBeginFrameDerivedImpl(const BeginFrameArgs& args) override;
@@ skipping 49 matching lines @@
 
   base::WeakPtrFactory<DisplayScheduler> weak_ptr_factory_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(DisplayScheduler);
 };
 
 }  // namespace cc
 
 #endif  // CC_SURFACES_DISPLAY_SCHEDULER_H_