Combine ViewHostMsg_{Paint,Scroll}Rect into one IPC....

chrome/browser/renderer_host/browser_render_process_host.cc

 // Copyright (c) 2009 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.
 
 // Represents the browser side of the browser <--> renderer communication
 // channel. There will be one RenderProcessHost per renderer process.
 
 #include "chrome/browser/renderer_host/browser_render_process_host.h"
 
 #include <algorithm>
@@ skipping 329 matching lines @@
 
 void BrowserRenderProcessHost::CancelResourceRequests(int render_widget_id) {
   widget_helper_->CancelResourceRequests(render_widget_id);
 }
 
 void BrowserRenderProcessHost::CrossSiteClosePageACK(
     const ViewMsg_ClosePage_Params& params) {
   widget_helper_->CrossSiteClosePageACK(params);
 }
 
-bool BrowserRenderProcessHost::WaitForPaintMsg(int render_widget_id,
-                                               const base::TimeDelta& max_delay,
-                                               IPC::Message* msg) {
+bool BrowserRenderProcessHost::WaitForUpdateMsg(
+    int render_widget_id,
+    const base::TimeDelta& max_delay,
+    IPC::Message* msg) {
   // The post task to this thread with the process id could be in queue, and we
   // don't want to dispatch a message before then since it will need the handle.
   if (child_process_.get() && child_process_->IsStarting())
     return false;
 
-  return widget_helper_->WaitForPaintMsg(render_widget_id, max_delay, msg);
+  return widget_helper_->WaitForUpdateMsg(render_widget_id, max_delay, msg);
 }
 
 void BrowserRenderProcessHost::ReceivedBadMessage(uint32 msg_type) {
   BadMessageTerminateProcess(msg_type, GetHandle());
 }
 
 void BrowserRenderProcessHost::ViewCreated() {
   visited_link_updater_->ReceiverReady(this);
 }
 
@@ skipping 627 matching lines @@
         IPC::InvalidPlatformFileForTransit(),
         std::vector<std::string>(),
         std::string(),
         false));
   }
 }
 
 void BrowserRenderProcessHost::EnableAutoSpellCorrect(bool enable) {
   Send(new ViewMsg_SpellChecker_EnableAutoSpellCorrect(enable));
 }