Convert PepperBrowserConnection to be a RenderFrameObserver.

ppapi/proxy/plugin_resource.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 "ppapi/proxy/plugin_resource.h"
 
 #include <limits>
 
 #include "ppapi/proxy/ppapi_messages.h"
 
@@ skipping 97 matching lines @@
   ResourceMessageCallParams params(pp_resource(), GetNextSequence());
   SendResourceCall(dest, params, msg);
 }
 
 bool PluginResource::SendResourceCall(
     Destination dest,
     const ResourceMessageCallParams& call_params,
     const IPC::Message& nested_msg) {
   // For in-process plugins, we need to send the routing ID with the request.
   // The browser then uses that routing ID when sending the reply so it will be
-  // routed back to the correct RenderViewImpl.
+  // routed back to the correct RenderFrameImpl.
   if (dest == BROWSER && connection_.in_process) {
     return GetSender(dest)->Send(new PpapiHostMsg_InProcessResourceCall(
         connection_.browser_sender_routing_id,
         call_params,
         nested_msg));
   } else {
     return GetSender(dest)->Send(
         new PpapiHostMsg_ResourceCall(call_params, nested_msg));
   }
 }
@@ skipping 22 matching lines @@
   int32_t ret = next_sequence_number_;
   if (next_sequence_number_ == std::numeric_limits<int32_t>::max())
     next_sequence_number_ = 1;  // Skip 0 which is invalid.
   else
     next_sequence_number_++;
   return ret;
 }
 
 }  // namespace proxy
 }  // namespace ppapi