Hide MHTMLGenerationManager from chrome.

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"
 
 #if defined(OS_WIN)
@@ skipping 1310 matching lines @@
 }
 
 void RenderProcessHostImpl::OnRevealFolderInOS(const FilePath& path) {
   // Only honor the request if appropriate persmissions are granted.
   if (ChildProcessSecurityPolicyImpl::GetInstance()->CanReadFile(GetID(),
                                                                  path))
     content::GetContentClient()->browser()->OpenItem(path);
 }
 
 void RenderProcessHostImpl::OnSavedPageAsMHTML(int job_id, int64 data_size) {
-  content::GetContentClient()->browser()->GetMHTMLGenerationManager()->
-      MHTMLGenerated(job_id, data_size);
+  MHTMLGenerationManager::GetInstance()->MHTMLGenerated(job_id, data_size);
 }