Enable pp::flash::FontFile support on Windows

ppapi/api/private/ppb_flash_font_file.idl

 /* 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.
  */
 
 /**
  * This file contains the <code>PPB_Flash_FontFile</code> interface.
  */
 
+[generate_thunk]
+
 label Chrome {
-  M24 = 0.1
+  M24 = 0.1,
+  M48 = 0.2
 };
 
 interface PPB_Flash_FontFile {
   /* Returns a resource identifying a font file corresponding to the given font
    * request after applying the browser-specific fallback.
    */
   PP_Resource Create(
       [in] PP_Instance instance,
       [in] PP_BrowserFont_Trusted_Description description,
       [in] PP_PrivateFontCharset charset);
 
   /* Determines if a given resource is Flash font file.
    */
   PP_Bool IsFlashFontFile([in] PP_Resource resource);
 
   /* Returns the requested font table.
    * |output_length| should pass in the size of |output|. And it will return
    * the actual length of returned data. |output| could be NULL in order to
    * query the size of the buffer size needed. In that case, the input value of
    * |output_length| is ignored.
    * Note: it is Linux only and fails directly on other platforms.
    */
   PP_Bool GetFontTable(
       [in] PP_Resource font_file,
       [in] uint32_t table,
       [out] mem_t output,
       [out] uint32_t output_length);
+
+  /**
+   * Returns whether <code>PPB_Flash_FontFile</code> is supported on Windows.
+   */
+  [version=0.2]
+  PP_Bool IsSupportedForWindows();
+
 };