components: Cleanup class/struct fwd declarations

components/nacl/renderer/plugin/plugin.h

 // -*- c++ -*-
 // 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.
 
 // The portable representation of an instance and root scriptable object.
 // The PPAPI version of the plugin instantiates a subclass of this class.
 
 #ifndef COMPONENTS_NACL_RENDERER_PLUGIN_PLUGIN_H_
 #define COMPONENTS_NACL_RENDERER_PLUGIN_PLUGIN_H_
@@ skipping 12 matching lines @@
 #include "ppapi/cpp/instance.h"
 #include "ppapi/cpp/private/uma_private.h"
 #include "ppapi/cpp/url_loader.h"
 #include "ppapi/cpp/var.h"
 #include "ppapi/cpp/view.h"
 #include "ppapi/utility/completion_callback_factory.h"
 
 namespace pp {
 class CompletionCallback;
 class URLLoader;
-class URLUtil_Dev;
 }
 
 namespace plugin {
 
 class ErrorInfo;
-class Manifest;
 
 const PP_NaClFileInfo kInvalidNaClFileInfo = {
   PP_kInvalidFileHandle,
   0,  // token_lo
   0,  // token_hi
 };
 
 class Plugin : public pp::Instance {
  public:
   explicit Plugin(PP_Instance instance);
@@ skipping 87 matching lines @@
   PP_NaClFileInfo nexe_file_info_;
 
   pp::UMAPrivate uma_interface_;
 
   DISALLOW_COPY_AND_ASSIGN(Plugin);
 };
 
 }  // namespace plugin
 
 #endif  // COMPONENTS_NACL_RENDERER_PLUGIN_PLUGIN_H_