Extract minimal RenderViewHost interface for embedders, leaving

content/browser/download/mhtml_generation_manager.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/download/mhtml_generation_manager.h"
 
 #include "base/bind.h"
 #include "base/platform_file.h"
 #include "content/browser/renderer_host/render_process_host_impl.h"
 #include "content/browser/renderer_host/render_view_host.h"
@@ skipping 24 matching lines @@
 void MHTMLGenerationManager::GenerateMHTML(WebContents* web_contents,
     const FilePath& file,
     const GenerateMHTMLCallback& callback) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   static int id_counter = 0;
 
   int job_id = id_counter++;
   Job job;
   job.file_path = file;
   job.process_id = web_contents->GetRenderProcessHost()->GetID();
-  job.routing_id = web_contents->GetRenderViewHost()->routing_id();
+  job.routing_id = web_contents->GetRenderViewHost()->GetRoutingID();
   job.callback = callback;
   id_to_job_[job_id] = job;
 
   base::ProcessHandle renderer_process =
       web_contents->GetRenderProcessHost()->GetHandle();
   BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE,
       base::Bind(&MHTMLGenerationManager::CreateFile, this,
                  job_id, file, renderer_process));
 }
 
@@ skipping 33 matching lines @@
   IDToJobMap::iterator iter = id_to_job_.find(job_id);
   if (iter == id_to_job_.end()) {
     NOTREACHED();
     return;
   }
 
   Job& job = iter->second;
   job.browser_file = browser_file;
   job.renderer_file = renderer_file;
 
-  RenderViewHost* rvh = RenderViewHost::FromID(job.process_id, job.routing_id);
+  RenderViewHostImpl* rvh = RenderViewHostImpl::FromID(
+      job.process_id, job.routing_id);
   if (!rvh) {
     // The tab went away.
     JobFinished(job_id, -1);
     return;
   }
 
-  rvh->Send(new ViewMsg_SavePageAsMHTML(rvh->routing_id(), job_id,
+  rvh->Send(new ViewMsg_SavePageAsMHTML(rvh->GetRoutingID(), job_id,
                                         renderer_file));
 }
 
 void MHTMLGenerationManager::JobFinished(int job_id, int64 file_size) {
   IDToJobMap::iterator iter = id_to_job_.find(job_id);
   if (iter == id_to_job_.end()) {
     NOTREACHED();
     return;
   }
 
   Job& job = iter->second;
   job.callback.Run(job.file_path, file_size);
 
   BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE,
       base::Bind(&MHTMLGenerationManager::CloseFile, this, job.browser_file));
 
   id_to_job_.erase(job_id);
 }
 
 void MHTMLGenerationManager::CloseFile(base::PlatformFile file) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
   base::ClosePlatformFile(file);
 }