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

chrome/browser/renderer_host/browser_render_process_host.h

 // Copyright (c) 2006-2008 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.
 
 #ifndef CHROME_BROWSER_RENDERER_HOST_BROWSER_RENDER_PROCESS_HOST_H_
 #define CHROME_BROWSER_RENDERER_HOST_BROWSER_RENDER_PROCESS_HOST_H_
 
 #include "build/build_config.h"
 
 #include <map>
@@ skipping 45 matching lines @@
  public:
   explicit BrowserRenderProcessHost(Profile* profile);
   ~BrowserRenderProcessHost();
 
   // RenderProcessHost implementation (public portion).
   virtual bool Init(bool is_extensions_process,
                     URLRequestContextGetter* request_context);
   virtual int GetNextRoutingID();
   virtual void CancelResourceRequests(int render_widget_id);
   virtual void CrossSiteClosePageACK(const ViewMsg_ClosePage_Params& params);
-  virtual bool WaitForPaintMsg(int render_widget_id,
-                               const base::TimeDelta& max_delay,
-                               IPC::Message* msg);
+  virtual bool WaitForUpdateMsg(int render_widget_id,
+                                const base::TimeDelta& max_delay,
+                                IPC::Message* msg);
   virtual void ReceivedBadMessage(uint32 msg_type);
   virtual void WidgetRestored();
   virtual void WidgetHidden();
   virtual void ViewCreated();
   virtual void SendVisitedLinkTable(base::SharedMemory* table_memory);
   virtual void AddVisitedLinks(const VisitedLinkCommon::Fingerprints& links);
   virtual void ResetVisitedLinks();
   virtual bool FastShutdownIfPossible();
   virtual bool SendWithTimeout(IPC::Message* msg, int timeout_ms);
   virtual base::ProcessHandle GetHandle();
@@ skipping 126 matching lines @@
   // Messages we queue while waiting for the process handle.  We queue them here
   // instead of in the channel so that we ensure they're sent after init related
   // messages that are sent once the process handle is available.  This is
   // because the queued messages may have dependencies on the init messages.
   std::queue<IPC::Message*> queued_messages_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserRenderProcessHost);
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_BROWSER_RENDER_PROCESS_HOST_H_