cc: Make scheduling be driven by vsync for android webview.

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"
 
@@ skipping 28 matching lines @@
   void DidLoseOutputSurface() override;
   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 {}
   void SetMemoryPolicy(const ManagedMemoryPolicy& policy) override;
   void SetTreeActivationCallback(const base::Closure&) override {}
+  void OnDraw() override {}
 
   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 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_