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

content/renderer/render_widget_fullscreen.cc

 // Copyright (c) 2010 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.
 
 #include "content/renderer/render_widget_fullscreen.h"
 
 #include "content/common/view_messages.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebWidget.h"
 
 using WebKit::WebWidget;
@@ skipping 11 matching lines @@
   // TODO(boliu): Handle full screen render widgets here.
   return RenderWidget::CreateWebWidget(this);
 }
 
 void RenderWidgetFullscreen::Init(int32 opener_id) {
   DCHECK(!webwidget_);
 
   RenderWidget::DoInit(
       opener_id,
       CreateWebWidget(),
-      new ViewHostMsg_CreateFullscreenWidget(opener_id, &routing_id_));
+      new ViewHostMsg_CreateFullscreenWidget(
+          opener_id, &routing_id_, &surface_id_));
 }
 
 void RenderWidgetFullscreen::show(WebKit::WebNavigationPolicy) {
   DCHECK(!did_show_) << "received extraneous Show call";
   DCHECK_NE(MSG_ROUTING_NONE, routing_id_);
   DCHECK_NE(MSG_ROUTING_NONE, opener_id_);
 
   if (!did_show_) {
     did_show_ = true;
     Send(new ViewHostMsg_ShowFullscreenWidget(opener_id_, routing_id_));
     SetPendingWindowRect(initial_pos_);
   }
 }
 
 RenderWidgetFullscreen::RenderWidgetFullscreen()
     : RenderWidget(WebKit::WebPopupTypeNone) {
 }