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

content/renderer/gpu/webgraphicscontext3d_command_buffer_impl.cc

 // 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.
 
 #if defined(ENABLE_GPU)
 
 #include "content/renderer/gpu/webgraphicscontext3d_command_buffer_impl.h"
 
 #include "third_party/khronos/GLES2/gl2.h"
 #ifndef GL_GLEXT_PROTOTYPES
@@ skipping 128 matching lines @@
 
   if (web_view && web_view->mainFrame())
     active_url_ = GURL(web_view->mainFrame()->document().url());
 
   attributes_ = attributes;
   render_directly_to_web_view_ = render_directly_to_web_view;
   if (render_directly_to_web_view_) {
     RenderViewImpl* render_view = RenderViewImpl::FromWebView(web_view);
     if (!render_view)
       return false;
-    render_view_routing_id_ = render_view->routing_id();
+    surface_id_ = render_view->surface_id();
     web_view_ = web_view;
   }
   return true;
 }
 
 bool WebGraphicsContext3DCommandBufferImpl::MaybeInitializeGL() {
   if (context_)
     return true;
   if (initialize_failed_)
     return false;
@@ skipping 35 matching lines @@
     base::AutoLock lock(g_all_shared_contexts_lock.Get());
     RendererGLContext* share_group = NULL;
     if (attributes_.shareResources) {
       share_group = g_all_shared_contexts.Pointer()->empty() ?
           NULL : (*g_all_shared_contexts.Pointer()->begin())->context_;
     }
 
     if (render_directly_to_web_view_) {
       context_ = RendererGLContext::CreateViewContext(
           host_,
-          render_view_routing_id_,
+          surface_id_,
           share_group,
           preferred_extensions,
           attribs,
           active_url_,
           gpu_preference_);
     } else {
       context_ = RendererGLContext::CreateOffscreenContext(
           host_,
           gfx::Size(1, 1),
           share_group,
@@ skipping 983 matching lines @@
   }
   if (attributes_.shareResources)
     ClearSharedContexts();
   RenderViewImpl* renderview =
       web_view_ ? RenderViewImpl::FromWebView(web_view_) : NULL;
   if (renderview)
     renderview->OnViewContextSwapBuffersAborted();
 }
 
 #endif  // defined(ENABLE_GPU)