Enable pp::flash::FontFile support on Windows

ppapi/c/private/ppb_flash_font_file.h

Index: ppapi/c/private/ppb_flash_font_file.h
diff --git a/ppapi/c/private/ppb_flash_font_file.h b/ppapi/c/private/ppb_flash_font_file.h
index f50818ed4d968a69fb5fcc87396b5f43f2fb6b14..fd1845678fb1503d4685ba4b3dc12072b86b176c 100644
--- a/ppapi/c/private/ppb_flash_font_file.h
+++ b/ppapi/c/private/ppb_flash_font_file.h
@@ -18,7 +18,8 @@
 #include "ppapi/c/trusted/ppb_browser_font_trusted.h"
 
 #define PPB_FLASH_FONTFILE_INTERFACE_0_1 "PPB_Flash_FontFile;0.1"
-#define PPB_FLASH_FONTFILE_INTERFACE PPB_FLASH_FONTFILE_INTERFACE_0_1
+#define PPB_FLASH_FONTFILE_INTERFACE_0_2 "PPB_Flash_FontFile;0.2"
+#define PPB_FLASH_FONTFILE_INTERFACE PPB_FLASH_FONTFILE_INTERFACE_0_2
 
 /**
  * @file
@@ -53,8 +54,47 @@ struct PPB_Flash_FontFile_0_1 {
                           void* output,
                           uint32_t* output_length);
 };
+/**
+ * @}
+ */
+
+/**
+ * @addtogroup Interfaces
+ * @{
+ */
+/**
+ * This new version adds support for Windows.
+ *
+ * The interface is actually identical to previous version, Flash relies on
+ * this new version interface to decide whether it should continue to use Win
+ * GDI Font API or switch to this API on Windows.
+ *
+ */
+struct PPB_Flash_FontFile_0_2 {
+  /* Returns a resource identifying a font file corresponding to the given font
+   * request after applying the browser-specific fallback.
+   */
+  PP_Resource (*Create)(
+      PP_Instance instance,
+      const struct PP_BrowserFont_Trusted_Description* description,
+      PP_PrivateFontCharset charset);
+  /* Determines if a given resource is Flash font file.
+   */
+  PP_Bool (*IsFlashFontFile)(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)(PP_Resource font_file,
+                          uint32_t table,
+                          void* output,
+                          uint32_t* output_length);
+};
 
-typedef struct PPB_Flash_FontFile_0_1 PPB_Flash_FontFile;
+typedef struct PPB_Flash_FontFile_0_2 PPB_Flash_FontFile;
 /**
  * @}
  */