PPAPI: Make PPP_MessageHandler work in PNaCl

ppapi/c/ppp_message_handler.h

Index: ppapi/c/ppp_message_handler.h
diff --git a/ppapi/c/ppp_message_handler.h b/ppapi/c/ppp_message_handler.h
index 8032378a92b4f631027a93fe83c3a3179262482e..2b1a0dbddd17a7a3da38f79785583eaea8bc8928 100644
--- a/ppapi/c/ppp_message_handler.h
+++ b/ppapi/c/ppp_message_handler.h
@@ -3,7 +3,7 @@
  * found in the LICENSE file.
  */
 
-/* From ppp_message_handler.idl modified Tue Jun  3 16:50:26 2014. */
+/* From ppp_message_handler.idl modified Wed Sep 10 17:04:21 2014. */
 
 #ifndef PPAPI_C_PPP_MESSAGE_HANDLER_H_
 #define PPAPI_C_PPP_MESSAGE_HANDLER_H_
@@ -36,7 +36,7 @@
  * This interface struct should not be returned by PPP_GetInterface; instead it
  * must be passed as a parameter to PPB_Messaging::RegisterMessageHandler.
  */
-struct PPP_MessageHandler_0_1 {
+struct PPP_MessageHandler_0_2 { /* dev */
   /**
    * Invoked as a result of JavaScript invoking postMessage() on the plugin's
    * DOM element.
@@ -50,7 +50,7 @@ struct PPP_MessageHandler_0_1 {
    */
   void (*HandleMessage)(PP_Instance instance,
                         void* user_data,
-                        struct PP_Var message);
+                        const struct PP_Var* message);
   /**
    * Invoked as a result of JavaScript invoking postMessageAndAwaitResponse()
    * on the plugin's DOM element.
@@ -61,12 +61,14 @@ struct PPP_MessageHandler_0_1 {
    * RegisterMessageHandler.
    * @param[in] message is a copy of the parameter that JavaScript provided
    * to postMessageAndAwaitResponse.
-   * @return will be copied to a JavaScript object which is returned as
-   * the result of postMessageAndAwaitResponse to the invoking JavaScript.
+   * @param[out] response will be copied to a JavaScript object which is
+   * returned as the result of postMessageAndAwaitResponse to the invoking
+   *
    */
-  struct PP_Var (*HandleBlockingMessage)(PP_Instance instance,
-                                         void* user_data,
-                                         struct PP_Var message);
+  void (*HandleBlockingMessage)(PP_Instance instance,
+                                void* user_data,
+                                const struct PP_Var* message,
+                                struct PP_Var* response);
   /**
    * Invoked when the handler object is no longer needed. After this, no more
    * calls will be made which pass this same value for <code>instance</code>