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

content/browser/renderer_host/render_message_filter.cc

 // 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.
 
 #include "content/browser/renderer_host/render_message_filter.h"
 
 #include <map>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 379 matching lines @@
 void RenderMessageFilter::OnDestruct() const {
   BrowserThread::DeleteOnIOThread::Destruct(this);
 }
 
 bool RenderMessageFilter::OffTheRecord() const {
   return incognito_;
 }
 
 void RenderMessageFilter::OnMsgCreateWindow(
     const ViewHostMsg_CreateWindow_Params& params,
-    int* route_id, int64* cloned_session_storage_namespace_id) {
+    int* route_id,
+    int* surface_id,
+    int64* cloned_session_storage_namespace_id) {
   if (!content::GetContentClient()->browser()->CanCreateWindow(
           GURL(params.opener_security_origin), params.window_container_type,
           resource_context_, render_process_id_)) {
     *route_id = MSG_ROUTING_NONE;
+    *surface_id = 0;
     return;
   }
 
   *cloned_session_storage_namespace_id =
       webkit_context_->dom_storage_context()->CloneSessionStorage(
           params.session_storage_namespace_id);
   render_widget_helper_->CreateNewWindow(params,
                                          peer_handle(),
-                                         route_id);
+                                         route_id,
+                                         surface_id);
 }
 
 void RenderMessageFilter::OnMsgCreateWidget(int opener_id,
                                             WebKit::WebPopupType popup_type,
-                                            int* route_id) {
-  render_widget_helper_->CreateNewWidget(opener_id, popup_type, route_id);
+                                            int* route_id,
+                                            int* surface_id) {
+  render_widget_helper_->CreateNewWidget(
+      opener_id, popup_type, route_id, surface_id);
 }
 
 void RenderMessageFilter::OnMsgCreateFullscreenWidget(int opener_id,
-                                                      int* route_id) {
-  render_widget_helper_->CreateNewFullscreenWidget(opener_id, route_id);
+                                                      int* route_id,
+                                                      int* surface_id) {
+  render_widget_helper_->CreateNewFullscreenWidget(
+      opener_id, route_id, surface_id);
 }
 
 void RenderMessageFilter::OnSetCookie(const IPC::Message& message,
                                       const GURL& url,
                                       const GURL& first_party_for_cookies,
                                       const std::string& cookie) {
   ChildProcessSecurityPolicy* policy =
       ChildProcessSecurityPolicy::GetInstance();
   if (!policy->CanUseCookiesForOrigin(render_process_id_, url))
     return;
@@ skipping 471 matching lines @@
   // for a resize or if no backing store) the RenderWidgetHost is blocking the
   // UI thread for some time, waiting for an UpdateRect from the renderer. If we
   // are going to switch to accelerated compositing, the GPU process may need
   // round-trips to the UI thread before finishing the frame, causing deadlocks
   // if we delay the UpdateRect until we receive the OnSwapBuffersComplete. So
   // the renderer sent us this message, so that we can unblock the UI thread.
   // We will simply re-use the UpdateRect unblock mechanism, just with a
   // different message.
   render_widget_helper_->DidReceiveUpdateMsg(msg);
 }