Call DidPostSwapBuffers and SwapBuffersComplete for browser software surface

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()
       : output_surface_(NULL),
         begin_frame_count_(0),
+        swap_count_(0),
         deferred_initialize_called_(false),
         did_lose_output_surface_called_(false),
         memory_policy_(0) {}
 
   explicit FakeOutputSurfaceClient(OutputSurface* output_surface)
       : output_surface_(output_surface),
         begin_frame_count_(0),
+        swap_count_(0),
         deferred_initialize_called_(false),
         did_lose_output_surface_called_(false),
         memory_policy_(0) {}
 
   virtual void DeferredInitialize() override;
   virtual void ReleaseGL() override;
   virtual void CommitVSyncParameters(base::TimeTicks timebase,
                                      base::TimeDelta interval) override {}
   virtual void SetNeedsRedrawRect(const gfx::Rect& damage_rect) override {}
   virtual void BeginFrame(const BeginFrameArgs& args) override;
-  virtual void DidSwapBuffers() override {}
+  virtual void DidSwapBuffers() override;
   virtual void DidSwapBuffersComplete() override {}
   virtual void ReclaimResources(const CompositorFrameAck* ack) override {}
   virtual void DidLoseOutputSurface() override;
   virtual void SetExternalDrawConstraints(
       const gfx::Transform& transform,
       const gfx::Rect& viewport,
       const gfx::Rect& clip,
       const gfx::Rect& viewport_rect_for_tile_priority,
       const gfx::Transform& transform_for_tile_priority,
       bool resourceless_software_draw) override {}
   virtual void SetMemoryPolicy(const ManagedMemoryPolicy& policy) override;
   virtual void SetTreeActivationCallback(const base::Closure&) override {}
 
   int begin_frame_count() { return begin_frame_count_; }
+  int swap_count() { return swap_count_; }
 
   bool deferred_initialize_called() {
     return deferred_initialize_called_;
   }
 
   bool did_lose_output_surface_called() {
     return did_lose_output_surface_called_;
   }
 
   const ManagedMemoryPolicy& memory_policy() const { return memory_policy_; }
 
  private:
   OutputSurface* output_surface_;
   int begin_frame_count_;
+  int swap_count_;
   bool deferred_initialize_called_;
   bool did_lose_output_surface_called_;
   ManagedMemoryPolicy memory_policy_;
 };
 
 }  // namespace cc
 
 #endif  // CC_TEST_FAKE_OUTPUT_SURFACE_CLIENT_H_