Associate an id with the output surface to handle lost contexts

content/port/browser/render_widget_host_view_port.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_PORT_BROWSER_RENDER_WIDGET_HOST_VIEW_PORT_H_
 #define CONTENT_PORT_BROWSER_RENDER_WIDGET_HOST_VIEW_PORT_H_
 
 #include "base/callback.h"
 #include "base/process_util.h"
 #include "base/strings/string16.h"
@@ skipping 224 matching lines @@
   // next swap buffers or post sub buffer.
   virtual void AcceleratedSurfaceSuspend() = 0;
 
   virtual void AcceleratedSurfaceRelease() = 0;
 
   // Return true if the view has an accelerated surface that contains the last
   // presented frame for the view. If |desired_size| is non-empty, true is
   // returned only if the accelerated surface size matches.
   virtual bool HasAcceleratedSurface(const gfx::Size& desired_size) = 0;
 
-  virtual void OnSwapCompositorFrame(scoped_ptr<cc::CompositorFrame> frame) = 0;
+  virtual void OnSwapCompositorFrame(
+      uint32 output_surface_id,
+      scoped_ptr<cc::CompositorFrame> frame) = 0;
 
   virtual void GetScreenInfo(WebKit::WebScreenInfo* results) = 0;
 
   // The size of the view's backing surface in non-DPI-adjusted pixels.
   virtual gfx::Size GetPhysicalBackingSize() const = 0;
 
   // The height of the physical backing surface that is overdrawn opaquely in
   // the browser, for example by an on-screen-keyboard (in DPI-adjusted pixels).
   virtual float GetOverdrawBottomHeight() const = 0;
 
@@ skipping 74 matching lines @@
 
 #if defined(OS_WIN) && defined(USE_AURA)
   virtual void SetParentNativeViewAccessible(
       gfx::NativeViewAccessible accessible_parent) = 0;
 #endif
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PORT_BROWSER_RENDER_WIDGET_HOST_VIEW_PORT_H_