Modified the flash cipboard interface to add html clipboard support.

ppapi/thunk/ppb_flash_clipboard_thunk.cc

Index: ppapi/thunk/ppb_flash_clipboard_thunk.cc
diff --git a/ppapi/thunk/ppb_flash_clipboard_thunk.cc b/ppapi/thunk/ppb_flash_clipboard_thunk.cc
index ffecb3466083221d8fd937aaeb0371a8febdf3e7..47410db1b2f7f75f045995ec5c5da565f0055b31 100644
--- a/ppapi/thunk/ppb_flash_clipboard_thunk.cc
+++ b/ppapi/thunk/ppb_flash_clipboard_thunk.cc
@@ -41,16 +41,46 @@ int32_t WritePlainText(PP_Instance instance,
   return enter.functions()->WritePlainText(instance, clipboard_type, text);
 }
 
-const PPB_Flash_Clipboard g_ppb_flash_clipboard_thunk = {
+PP_Var ReadData(PP_Instance instance,
+                PP_Flash_Clipboard_Type clipboard_type,
+                PP_Flash_Clipboard_Format format) {
+  EnterFlashClipboard enter(instance, true);
+  if (enter.failed())
+    return PP_MakeUndefined();
+  return enter.functions()->ReadData(instance, clipboard_type, format);
+}
+
+int32_t WriteData(PP_Instance instance,
+                  PP_Flash_Clipboard_Type clipboard_type,
+                  uint32_t data_item_count,
+                  const struct PP_Flash_Clipboard_Data_Item data_items[]) {
+  EnterFlashClipboard enter(instance, true);
+  if (enter.failed())
+    return PP_ERROR_NOINTERFACE;
+  return enter.functions()->WriteData(instance, clipboard_type, data_item_count,
+                                      data_items);
+}
+
+const PPB_Flash_Clipboard_3_0 g_ppb_flash_clipboard_thunk_3_0 = {
   &IsFormatAvailable,
   &ReadPlainText,
   &WritePlainText
 };
 
+const PPB_Flash_Clipboard_4_0 g_ppb_flash_clipboard_thunk_4_0 = {
+  &IsFormatAvailable,
+  &ReadData,
+  &WriteData
+};
+
 }  // namespace
 
 const PPB_Flash_Clipboard_3_0* GetPPB_Flash_Clipboard_3_0_Thunk() {
-  return &g_ppb_flash_clipboard_thunk;
+  return &g_ppb_flash_clipboard_thunk_3_0;
+}
+
+const PPB_Flash_Clipboard_4_0* GetPPB_Flash_Clipboard_4_0_Thunk() {
+  return &g_ppb_flash_clipboard_thunk_4_0;
 }
 
 }  // namespace thunk