GPU compositing surface handle is no longer sent to renderer process.

content/renderer/gpu/renderer_gl_context.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.
 
 // This API is consistent with other OpenGL setup APIs like window's WGL
 // and pepper's PGL. This API is used to manage OpenGL RendererGLContexts in the
 // Chrome renderer process in a way that is consistent with other platforms.
 
 #ifndef CONTENT_RENDERER_GPU_RENDERER_GL_CONTEXT_H_
 #define CONTENT_RENDERER_GPU_RENDERER_GL_CONTEXT_H_
@@ skipping 67 matching lines @@
   // already in place. We could add more entry points and messages to
   // allocate both fake PluginWindowHandles and NativeViewIds and map
   // from fake NativeViewIds to PluginWindowHandles, but this seems like
   // unnecessary complexity at the moment.
   //
   // The render_view_id is currently also only used on Mac OS X.
   // TODO(kbr): clean up the arguments to this function and make them
   // more cross-platform.
   static RendererGLContext* CreateViewContext(
       GpuChannelHost* channel,
-      gfx::PluginWindowHandle render_surface,
       int render_view_id,
       const char* allowed_extensions,
       const int32* attrib_list,
       const GURL& active_arl);
 
 #if defined(OS_MACOSX)
   // On Mac OS X only, view RendererGLContexts actually behave like offscreen
   // RendererGLContexts, and require an explicit resize operation which is
   // slightly different from that of offscreen RendererGLContexts.
   void ResizeOnscreen(const gfx::Size& size);
@@ skipping 81 matching lines @@
   // for synchronization with parent context. If *this* context does not have a
   // parent context, these methods will return false.
   bool GetParentToChildLatch(uint32* parent_to_child_latch);
   bool GetChildToParentLatch(uint32* child_to_parent_latch);
 
  private:
   RendererGLContext(GpuChannelHost* channel,
                     RendererGLContext* parent);
 
   bool Initialize(bool onscreen,
-                  gfx::PluginWindowHandle render_surface,
                   int render_view_id,
                   const gfx::Size& size,
                   const char* allowed_extensions,
                   const int32* attrib_list,
                   const GURL& active_url);
   void Destroy();
 
   void OnSwapBuffers();
   void OnContextLost();
 
@@ skipping 10 matching lines @@
   int32 transfer_buffer_id_;
   gpu::gles2::GLES2Implementation* gles2_implementation_;
   gfx::Size size_;
   Error last_error_;
   int frame_number_;
 
   DISALLOW_COPY_AND_ASSIGN(RendererGLContext);
 };
 
 #endif  // CONTENT_RENDERER_GPU_RENDERER_GL_CONTEXT_H_