Associate an id with the output surface to handle lost contexts

content/browser/renderer_host/render_widget_host_view_guest.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_GUEST_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_GUEST_H_
 
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 106 matching lines @@
       const base::Callback<void(bool)>& callback) OVERRIDE;
   virtual bool CanCopyToVideoFrame() const OVERRIDE;
   virtual void OnAcceleratedCompositingStateChange() OVERRIDE;
   virtual void AcceleratedSurfaceBuffersSwapped(
       const GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params& params,
       int gpu_host_id) OVERRIDE;
   virtual void AcceleratedSurfacePostSubBuffer(
       const GpuHostMsg_AcceleratedSurfacePostSubBuffer_Params& params,
       int gpu_host_id) OVERRIDE;
   virtual void OnSwapCompositorFrame(
+      uint32 output_surface_id,
       scoped_ptr<cc::CompositorFrame> frame) OVERRIDE;
   virtual void AcceleratedSurfaceSuspend() OVERRIDE;
   virtual void AcceleratedSurfaceRelease() OVERRIDE;
   virtual bool HasAcceleratedSurface(const gfx::Size& desired_size) OVERRIDE;
   virtual void SetHasHorizontalScrollbar(
       bool has_horizontal_scrollbar) OVERRIDE;
   virtual void SetScrollOffsetPinning(
       bool is_pinned_to_left, bool is_pinned_to_right) OVERRIDE;
   virtual gfx::Rect GetBoundsInRootWindow() OVERRIDE;
   virtual gfx::GLSurfaceHandle GetCompositingSurface() OVERRIDE;
@@ skipping 77 matching lines @@
   RenderWidgetHostViewPort* platform_view_;
 #if defined(OS_WIN) || defined(USE_AURA)
   scoped_ptr<ui::GestureRecognizer> gesture_recognizer_;
 #endif  // defined(OS_WIN) || defined(USE_AURA)
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewGuest);
 };
 
 }  // namespace content
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_GUEST_H_