gpu: reference target surfaces through a globally unique surface id.

content/browser/renderer_host/image_transport_client.h

 // Copyright (c) 2011 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_IMAGE_TRANSPORT_CLIENT_H_
 #define CONTENT_BROWSER_RENDERER_HOST_IMAGE_TRANSPORT_CLIENT_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "ui/gfx/compositor/compositor.h"
 #include "ui/gfx/surface/transport_dib.h"
 
 namespace gfx {
 class Size;
 }
 
 // This is a client for ImageTransportSurface, that handles the
 // platform-specific task of binding the transport surface to a GL texture.
 // The GL texture is allocated in the SharedResources context, and the data is
 // only valid between Acquire and Release.
 class ImageTransportClient {
  public:
   virtual ~ImageTransportClient() {}
 
   // Initializes the client with the surface id. This returns the GL texture id,
   // or 0 if error.
-  virtual unsigned int Initialize(uint64* surface_id) = 0;
+  virtual unsigned int Initialize(uint64* surface_handle) = 0;
 
   // Gets the surface data into the texture.
   virtual void Acquire() = 0;
 
   // Releases the surface data.
   virtual void Release() = 0;
 
   // Returns whether the data is flipped in the Y direction.
   virtual bool Flipped() = 0;
 
   // Returns the shared memory handle used to transfer software data if needed.
   // Can be a NULL handle.
   virtual TransportDIB::Handle Handle() const = 0;
 
   // Creates a platform-specific client.
   static ImageTransportClient* Create(ui::SharedResources* resources,
                                       const gfx::Size& size);
 };
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_IMAGE_TRANSPORT_CLIENT_H_