PPAPI: Add dev synchronous JS->Plugin messaging API

mojo/examples/pepper_container_app/plugin_instance.h

 // Copyright 2014 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 MOJO_EXAMPLES_PEPPER_CONTAINER_APP_PLUGIN_INSTANCE_H_
 #define MOJO_EXAMPLES_PEPPER_CONTAINER_APP_PLUGIN_INSTANCE_H_
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "mojo/examples/pepper_container_app/plugin_module.h"
@@ skipping 65 matching lines @@
   virtual ppapi::Resource* GetSingletonResource(
       PP_Instance instance, ppapi::SingletonResourceID id) OVERRIDE;
   virtual int32_t RequestInputEvents(PP_Instance instance,
                                      uint32_t event_classes) OVERRIDE;
   virtual int32_t RequestFilteringInputEvents(PP_Instance instance,
                                               uint32_t event_classes) OVERRIDE;
   virtual void ClearInputEventRequest(PP_Instance instance,
                                       uint32_t event_classes) OVERRIDE;
   virtual void StartTrackingLatency(PP_Instance instance) OVERRIDE;
   virtual void PostMessage(PP_Instance instance, PP_Var message) OVERRIDE;
+  virtual int32_t RegisterMessageHandler(PP_Instance instance,
+                                         void* user_data,
+                                         const PPP_MessageHandler_0_1* handler,
+                                         PP_Resource message_loop) OVERRIDE;
+  virtual void UnregisterMessageHandler(PP_Instance instance) OVERRIDE;
   virtual PP_Bool SetCursor(PP_Instance instance,
                             PP_MouseCursor_Type type,
                             PP_Resource image,
                             const PP_Point* hot_spot) OVERRIDE;
   virtual int32_t LockMouse(
       PP_Instance instance,
       scoped_refptr<ppapi::TrackedCallback> callback) OVERRIDE;
   virtual void UnlockMouse(PP_Instance instance) OVERRIDE;
   virtual void SetTextInputType(PP_Instance instance,
                                 PP_TextInput_Type type) OVERRIDE;
@@ skipping 66 matching lines @@
   scoped_refptr<PluginModule> plugin_module_;
   ppapi::ScopedPPResource bound_graphics_;
 
   DISALLOW_COPY_AND_ASSIGN(PluginInstance);
 };
 
 }  // namespace examples
 }  // namespace mojo
 
 #endif  // MOJO_EXAMPLES_PEPPER_CONTAINER_APP_PLUGIN_INSTANCE_H_