Fix RenderWidgetHostViewAura as observer of CompositorVSyncManager

content/browser/renderer_host/render_widget_host_view_aura.h

 // Copyright (c) 2012 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 CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 44 matching lines @@
 class DelegatedFrameData;
 }
 
 namespace gfx {
 class Canvas;
 class Display;
 }
 
 namespace ui {
 class CompositorLock;
+class CompositorVSyncManager;
 class InputMethod;
 class LocatedEvent;
 class Texture;
 }
 
 namespace content {
 #if defined(OS_WIN)
 class LegacyRenderWidgetHostHWND;
 #endif
 
@@ skipping 558 matching lines @@
   base::string16 tooltip_;
 
   std::vector<base::Closure> on_compositing_did_commit_callbacks_;
 
   // The current frontbuffer texture.
   scoped_refptr<ui::Texture> current_surface_;
 
   // This holds the current software framebuffer, if any.
   scoped_ptr<SoftwareFrameManager> software_frame_manager_;
 
+  // The vsync manager we are observing for changes, if any.
+  scoped_refptr<ui::CompositorVSyncManager> vsync_manager_;
+
   // With delegated renderer, this is the last output surface, used to
   // disambiguate resources with the same id coming from different output
   // surfaces.
   uint32 last_output_surface_id_;
 
   // The number of delegated frame acks that are pending, to delay resource
   // returns until the acks are sent.
   int pending_delegated_ack_count_;
 
   // The damage in the previously presented buffer.
@@ skipping 129 matching lines @@
   // etc.
   scoped_ptr<content::LegacyRenderWidgetHostHWND>
       legacy_render_widget_host_HWND_;
 #endif
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewAura);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_