Convert PepperBrowserConnection to be a RenderFrameObserver.

ppapi/proxy/connection.h

 // 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.
 
 #ifndef PPAPI_PROXY_CONNECTION_H_
 #define PPAPI_PROXY_CONNECTION_H_
 
 #include "ipc/ipc_message.h"
 
 namespace IPC {
@@ skipping 22 matching lines @@
         renderer_sender(renderer),
         in_process(true),
         browser_sender_routing_id(routing_id) {
   }
 
   IPC::Sender* browser_sender;
   IPC::Sender* renderer_sender;
   bool in_process;
   // We need to use a routing ID when a plugin is in-process, and messages are
   // sent back from the browser to the renderer. This is so that messages are
-  // routed to the proper RenderViewImpl.
+  // routed to the proper RenderFrameImpl.
   int browser_sender_routing_id;
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
 
 #endif  // PPAPI_PROXY_CONNECTION_H_