Revise gamepad interface

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_gamepad_dev.h"
 #include "ppapi/c/dev/ppb_url_util_dev.h"
@@ skipping 65 matching lines @@
   virtual PP_Bool GetScreenSize(PP_Instance instance, PP_Size* size) = 0;
 
   // FlashFullscreen.
   virtual PP_Bool FlashIsFullscreen(PP_Instance instance) = 0;
   virtual PP_Bool FlashSetFullscreen(PP_Instance instance,
                                      PP_Bool fullscreen) = 0;
   virtual PP_Bool FlashGetScreenSize(PP_Instance instance, PP_Size* size) = 0;
 
   // Gamepad.
   virtual void SampleGamepads(PP_Instance instance,
-                              PP_GamepadsData_Dev* data) = 0;
+                              PP_GamepadsSampleData_Dev* 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;
 
   // Messaging.
@@ skipping 23 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_