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

content/browser/ppapi_plugin_process_host.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 "content/browser/ppapi_plugin_process_host.h"
 
 #include <string>
 
 #include "base/base_switches.h"
 #include "base/command_line.h"
@@ skipping 200 matching lines @@
       profile_data_directory_(profile_data_directory),
       is_broker_(false) {
   process_.reset(new BrowserChildProcessHostImpl(
       PROCESS_TYPE_PPAPI_PLUGIN, this));
 
   host_impl_.reset(new BrowserPpapiHostImpl(this, permissions_, info.name,
                                             info.path, profile_data_directory,
                                             false));
 
   filter_ = new PepperMessageFilter();
-  process_->GetHost()->AddFilter(filter_.get());
+  process_->AddFilter(filter_.get());
   process_->GetHost()->AddFilter(host_impl_->message_filter().get());
 
   GetContentClient()->browser()->DidCreatePpapiPlugin(host_impl_.get());
 
   // Only request network status updates if the plugin has dev permissions.
   if (permissions_.HasPermission(ppapi::PERMISSION_DEV))
     network_observer_.reset(new PluginNetworkObserver(this));
 }
 
 PpapiPluginProcessHost::PpapiPluginProcessHost()
@@ skipping 192 matching lines @@
   // sent_requests_ queue should be the one that the plugin just created.
   Client* client = sent_requests_.front();
   sent_requests_.pop();
 
   const ChildProcessData& data = process_->GetData();
   client->OnPpapiChannelOpened(channel_handle, base::GetProcId(data.handle),
                                data.id);
 }
 
 }  // namespace content