Move flash clipboard to the new proxy and add custom format support

ppapi/shared_impl/ppb_flash_shared.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_SHARED_IMPL_PPB_FLASH_SHARED_H_
 #define PPAPI_SHARED_IMPL_PPB_FLASH_SHARED_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "ppapi/shared_impl/ppapi_shared_export.h"
 #include "ppapi/thunk/ppb_flash_api.h"
 
 namespace ppapi {
 
 class PPAPI_SHARED_EXPORT PPB_Flash_Shared : public thunk::PPB_Flash_API {
  public:
   PPB_Flash_Shared();
   virtual ~PPB_Flash_Shared();
 
   // Shared implementation of PPB_Flash_API.
   virtual void FreeDirContents(PP_Instance instance,
                                PP_DirContents_Dev* contents) OVERRIDE;
 
- protected:
-  static bool IsValidClipboardType(PP_Flash_Clipboard_Type clipboard_type);
-  static bool IsValidClipboardFormat(PP_Flash_Clipboard_Format format);
-
  private:
   DISALLOW_COPY_AND_ASSIGN(PPB_Flash_Shared);
 };
 
 }  // namespace ppapi
 
 #endif  // PPAPI_SHARED_IMPL_PPB_FLASH_SHARED_H_