Cleanup: Remove unneeded forward declarations in ppapi.

ppapi/proxy/ppb_flash_proxy.h

 // Copyright (c) 2011 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_PPB_FLASH_PROXY_H_
-#define PPAPI_PPB_FLASH_PROXY_H_
+#ifndef PPAPI_PROXY_PPB_FLASH_PROXY_H_
+#define PPAPI_PROXY_PPB_FLASH_PROXY_H_
 
 #include <string>
 #include <vector>
 
 #include "ipc/ipc_platform_file.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/c/pp_module.h"
 #include "ppapi/c/pp_time.h"
 #include "ppapi/proxy/interface_proxy.h"
 #include "ppapi/shared_impl/host_resource.h"
 
-struct PP_FileInfo;
 struct PPB_Flash;
 
 namespace ppapi {
 
 struct PPB_URLRequestInfo_Data;
 
 namespace proxy {
 
 struct PPBFlash_DrawGlyphs_Params;
 class SerializedVarReturnValue;
 
 class PPB_Flash_Proxy : public InterfaceProxy {
  public:
-  PPB_Flash_Proxy(Dispatcher* dispatcher);
+  explicit PPB_Flash_Proxy(Dispatcher* dispatcher);
   virtual ~PPB_Flash_Proxy();
 
   static const PPB_Flash* GetInterface();
 
   // InterfaceProxy implementation.
   virtual bool OnMessageReceived(const IPC::Message& msg);
 
  private:
   // Message handlers.
   void OnMsgSetInstanceAlwaysOnTop(PP_Instance instance,
@@ skipping 17 matching lines @@
   // pointer so we don't have to retrieve it from the dispatcher each time.
   // In the plugin, this value is always NULL.
   const PPB_Flash* ppb_flash_impl_;
 
   DISALLOW_COPY_AND_ASSIGN(PPB_Flash_Proxy);
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
-#endif  // PPAPI_PPB_FLASH_PROXY_H_
+#endif  // PPAPI_PROXY_PPB_FLASH_PROXY_H_