Convert the async device ID getter to a chrome resource host

ppapi/proxy/ppb_flash_device_id_proxy.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_PPB_FLASH_DEVICE_ID_PROXY_H_
-#define PPAPI_PROXY_PPB_FLASH_DEVICE_ID_PROXY_H_
-
-#include <string>
-
-#include "ppapi/c/pp_instance.h"
-#include "ppapi/proxy/interface_proxy.h"
-
-namespace ppapi {
-namespace proxy {
-
-class PPB_Flash_DeviceID_Proxy : public InterfaceProxy {
- public:
-  PPB_Flash_DeviceID_Proxy(Dispatcher* dispatcher);
-  virtual ~PPB_Flash_DeviceID_Proxy();
-
-  static PP_Resource CreateProxyResource(PP_Instance instance);
-
-  // InterfaceProxy implementation.
-  virtual bool OnMessageReceived(const IPC::Message& msg);
-
-  static const ApiID kApiID = API_ID_PPB_FLASH_DEVICE_ID;
-
- private:
-  void OnPluginMsgGetReply(int32 routing_id,
-                           PP_Resource resource,
-                           int32 result,
-                           const std::string& id);
-
-  DISALLOW_COPY_AND_ASSIGN(PPB_Flash_DeviceID_Proxy);
-};
-
-}  // namespace proxy
-}  // namespace ppapi
-
-#endif  // PPAPI_PROXY_PPB_FLASH_DEVICE_ID_PROXY_H_
-