Add HandleInputEventAck message to allow out-of-process plugins to respond to user gestures.

ppapi/thunk/ppb_instance_api.h

 // 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.
 
 #ifndef PPAPI_THUNK_INSTANCE_API_H_
 #define PPAPI_THUNK_INSTANCE_API_H_
 
 #include "ppapi/c/dev/ppb_console_dev.h"
 #include "ppapi/c/dev/ppb_url_util_dev.h"
+#include "ppapi/c/pp_bool.h"
 #include "ppapi/c/pp_completion_callback.h"
+#include "ppapi/c/pp_size.h"
+#include "ppapi/c/pp_time.h"
 #include "ppapi/c/ppb_audio_config.h"
 #include "ppapi/c/ppb_gamepad.h"
 #include "ppapi/c/ppb_instance.h"
-#include "ppapi/c/pp_bool.h"
-#include "ppapi/c/pp_size.h"
 #include "ppapi/c/private/ppb_instance_private.h"
 #include "ppapi/shared_impl/api_id.h"
 
 // Windows headers interfere with this file.
 #ifdef PostMessage
 #undef PostMessage
 #endif
 
 namespace ppapi {
 
@@ skipping 59 matching lines @@
   virtual void SampleGamepads(PP_Instance instance,
                               PP_GamepadsSampleData* data) = 0;
 
   // InputEvent.
   virtual int32_t RequestInputEvents(PP_Instance instance,
                                      uint32_t event_classes) = 0;
   virtual int32_t RequestFilteringInputEvents(PP_Instance instance,
                                               uint32_t event_classes) = 0;
   virtual void ClearInputEventRequest(PP_Instance instance,
                                       uint32_t event_classes) = 0;
+  virtual void ClosePendingUserGesture(PP_Instance instance,
+                                       PP_TimeTicks timestamp) = 0;
 
   // Messaging.
   virtual void PostMessage(PP_Instance instance, PP_Var message) = 0;
 
   // MouseLock.
   virtual int32_t LockMouse(PP_Instance instance,
                             PP_CompletionCallback callback) = 0;
   virtual void UnlockMouse(PP_Instance instance) = 0;
 
   // Zoom.
@@ skipping 15 matching lines @@
   virtual PP_Var GetPluginInstanceURL(PP_Instance instance,
                                       PP_URLComponents_Dev* components) = 0;
 
   static const ApiID kApiID = API_ID_PPB_INSTANCE;
 };
 
 }  // namespace thunk
 }  // namespace ppapi
 
 #endif  // PPAPI_THUNK_INSTANCE_API_H_