Refactor PPB_Flash GetLocalTimeZoneOffset to the new PPAPI resource model

ppapi/thunk/ppb_flash_api.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_THUNK_PPB_FLASH_API_H_
 #define PPAPI_THUNK_PPB_FLASH_API_H_
 
 #include "ppapi/c/private/ppb_flash.h"
 #include "ppapi/c/private/ppb_flash_file.h"
 #include "ppapi/thunk/ppapi_thunk_export.h"
@@ skipping 36 matching lines @@
                            PP_Resource request_info,
                            const char* target,
                            PP_Bool from_user_action) = 0;
 
   // Internal navigate function that takes a URLRequestInfoData.
   virtual int32_t Navigate(PP_Instance instance,
                            const URLRequestInfoData& data,
                            const char* target,
                            PP_Bool from_user_action) = 0;
 
-  virtual double GetLocalTimeZoneOffset(PP_Instance instance, PP_Time t) = 0;
   virtual PP_Bool IsRectTopmost(PP_Instance instance, const PP_Rect* rect) = 0;
   virtual PP_Var GetSetting(PP_Instance instance, PP_FlashSetting setting) = 0;
 };
 
 }  // namespace thunk
 }  // namespace ppapi
 
 #endif // PPAPI_THUNK_PPB_FLASH_API_H_