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

content/browser/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/plugin_process_host.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #elif defined(OS_POSIX)
 #include <utility>  // for pair<>
@@ skipping 247 matching lines @@
 
   ResourceMessageFilter::GetContextsCallback get_contexts_callback(
       base::Bind(&PluginProcessHost::GetContexts,
       base::Unretained(this)));
 
   // TODO(jam): right now we're passing NULL for appcache, blob storage, and
   // file system. If NPAPI plugins actually use this, we'll have to plumb them.
   ResourceMessageFilter* resource_message_filter = new ResourceMessageFilter(
       process_->GetData().id, PROCESS_TYPE_PLUGIN, NULL, NULL, NULL,
       get_contexts_callback);
-  process_->GetHost()->AddFilter(resource_message_filter);
+  process_->AddFilter(resource_message_filter);
   return true;
 }
 
 void PluginProcessHost::ForceShutdown() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   Send(new PluginProcessMsg_NotifyRenderersOfPendingShutdown());
   process_->ForceShutdown();
 }
 
-void PluginProcessHost::AddFilter(IPC::ChannelProxy::MessageFilter* filter) {
-  process_->GetHost()->AddFilter(filter);
-}
-
 bool PluginProcessHost::OnMessageReceived(const IPC::Message& msg) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(PluginProcessHost, msg)
     IPC_MESSAGE_HANDLER(PluginProcessHostMsg_ChannelCreated, OnChannelCreated)
     IPC_MESSAGE_HANDLER(PluginProcessHostMsg_ChannelDestroyed,
                         OnChannelDestroyed)
 #if defined(OS_WIN)
     IPC_MESSAGE_HANDLER(PluginProcessHostMsg_PluginWindowDestroyed,
                         OnPluginWindowDestroyed)
 #endif
@@ skipping 127 matching lines @@
 }
 
 void PluginProcessHost::GetContexts(const ResourceHostMsg_Request& request,
                                     ResourceContext** resource_context,
                                     net::URLRequestContext** request_context) {
   *resource_context = resource_context_map_[request.origin_pid];
   *request_context = (*resource_context)->GetRequestContext();
 }
 
 }  // namespace content