Fix race conditions in window snapshot code.

content/browser/renderer_host/render_process_host_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.
 
 // Represents the browser side of the browser <--> renderer communication
 // channel. There will be one RenderProcessHost per renderer process.
 
 #include "content/browser/renderer_host/render_process_host_impl.h"
 
 #include <algorithm>
@@ skipping 1274 matching lines @@
 
 void RenderProcessHostImpl::OnChannelConnected(int32 peer_pid) {
 #if defined(IPC_MESSAGE_LOG_ENABLED)
   Send(new ChildProcessMsg_SetIPCLoggingEnabled(
       IPC::Logging::GetInstance()->Enabled()));
 #endif
 
   tracked_objects::ThreadData::Status status =
       tracked_objects::ThreadData::status();
   Send(new ChildProcessMsg_SetProfilerStatus(status));
+
+  Send(new ViewMsg_SetRendererProcessID(GetID()));
 }
 
 void RenderProcessHostImpl::OnChannelError() {
   ProcessDied(true /* already_dead */);
 }
 
 BrowserContext* RenderProcessHostImpl::GetBrowserContext() const {
   return browser_context_;
 }
 
@@ skipping 494 matching lines @@
     // Skip widgets in other processes.
     if (widget->GetProcess()->GetID() != GetID())
       continue;
 
     RenderViewHost* rvh = RenderViewHost::From(widget);
     rvh->UpdateWebkitPreferences(rvh->GetWebkitPreferences());
   }
 }
 
 }  // namespace content