Move guest view container message routing out of content/.

content/public/renderer/browser_plugin_delegate.cc

 // Copyright 2014 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/public/renderer/browser_plugin_delegate.h"
 
 #include "v8/include/v8.h"
 
 namespace content {
 
-bool BrowserPluginDelegate::OnMessageReceived(const IPC::Message& message) {
-  return false;
-}
-
 v8::Local<v8::Object> BrowserPluginDelegate::V8ScriptableObject(
     v8::Isolate* isolate) {
   return v8::Local<v8::Object>();
 }
 
 }  // namespace content