cc: Remove OutputSurfaceClient::DidSwapBuffers().

cc/test/fake_output_surface_client.h

 // Copyright 2013 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_TEST_FAKE_OUTPUT_SURFACE_CLIENT_H_
 #define CC_TEST_FAKE_OUTPUT_SURFACE_CLIENT_H_
 
 #include "cc/output/managed_memory_policy.h"
 #include "cc/output/output_surface_client.h"
 
 namespace cc {
 
 class OutputSurface;
 
 class FakeOutputSurfaceClient : public OutputSurfaceClient {
  public:
   FakeOutputSurfaceClient()
       : swap_count_(0),
         did_lose_output_surface_called_(false),
         memory_policy_(0) {}
 
   void CommitVSyncParameters(base::TimeTicks timebase,
                              base::TimeDelta interval) override {}
   void SetBeginFrameSource(BeginFrameSource* source) override {}
   void SetNeedsRedrawRect(const gfx::Rect& damage_rect) override {}
-  void DidSwapBuffers() override;
-  void DidSwapBuffersComplete() override {}
+  void DidSwapBuffersComplete() override;
   void DidReceiveTextureInUseResponses(
       const gpu::TextureInUseResponses& responses) override {}
   void ReclaimResources(const CompositorFrameAck* ack) override {}
   void DidLoseOutputSurface() override;
   void SetExternalTilePriorityConstraints(
       const gfx::Rect& viewport_rect_for_tile_priority,
       const gfx::Transform& transform_for_tile_priority) override {}
   void SetMemoryPolicy(const ManagedMemoryPolicy& policy) override;
   void SetTreeActivationCallback(const base::Closure&) override {}
   void OnDraw(const gfx::Transform& transform,
@@ skipping 11 matching lines @@
 
  private:
   int swap_count_;
   bool did_lose_output_surface_called_;
   ManagedMemoryPolicy memory_policy_;
 };
 
 }  // namespace cc
 
 #endif  // CC_TEST_FAKE_OUTPUT_SURFACE_CLIENT_H_