Make BrowserMessageFilter not derive from IPC::ChannelProxy::MessageFilter. This allows us to hide …

chrome/browser/prerender/prerender_browsertest.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.
 
 #include <deque>
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/path_service.h"
 #include "base/prefs/pref_service.h"
@@ skipping 132 matching lines @@
 class ChannelDestructionWatcher {
  public:
   ChannelDestructionWatcher() : channel_destroyed_(false),
                                 waiting_for_channel_destruction_(false) {
   }
 
   ~ChannelDestructionWatcher() {
   }
 
   void WatchChannel(content::RenderProcessHost* host) {
-    host->GetChannel()->AddFilter(new DestructionMessageFilter(this));
+    host->AddFilter(new DestructionMessageFilter(this));
   }
 
   void WaitForChannelClose() {
     ASSERT_FALSE(waiting_for_channel_destruction_);
 
     if (channel_destroyed_)
       return;
     waiting_for_channel_destruction_ = true;
     content::RunMessageLoop();
 
@@ skipping 2895 matching lines @@
   PrerenderTestURL("files/prerender/prerender_page.html",
                    FINAL_STATUS_PAGE_BEING_CAPTURED, 1);
   WebContents* web_contents =
       current_browser()->tab_strip_model()->GetActiveWebContents();
   web_contents->IncrementCapturerCount();
   NavigateToDestURLWithDisposition(CURRENT_TAB, false);
   web_contents->DecrementCapturerCount();
 }
 
 }  // namespace prerender