Move plugin code to content.

content/plugin/npobject_base.h

 // Copyright (c) 2006-2010 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.
 //
 // Base interface implemented by NPObjectProxy and NPObjectStub
 
-#ifndef CHROME_PLUGIN_NPOBJECT_BASE_H_
-#define CHROME_PLUGIN_NPOBJECT_BASE_H_
+#ifndef CONTENT_PLUGIN_NPOBJECT_BASE_H_
+#define CONTENT_PLUGIN_NPOBJECT_BASE_H_
 #pragma once
 
 #include "ipc/ipc_channel.h"
 #include "third_party/npapi/bindings/npruntime.h"
 
 struct NPObject;
 
 class NPObjectBase {
  public:
   virtual ~NPObjectBase() {}
 
   // Returns the underlying NPObject handled by this NPObjectBase instance.
   virtual NPObject* GetUnderlyingNPObject() = 0;
 
   // Returns the channel listener for this NPObjectBase instance.
   virtual IPC::Channel::Listener* GetChannelListener() = 0;
 };
 
-#endif  // CHROME_PLUGIN_NPOBJECT_BASE_H_
-
+#endif  // CONTENT_PLUGIN_NPOBJECT_BASE_H_