Delete FunctionGroupBase from Pepper.

ppapi/thunk/ppb_gamepad_thunk.cc

 // 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.
 
 #include "ppapi/c/ppb_gamepad.h"
 #include "ppapi/thunk/thunk.h"
 #include "ppapi/thunk/enter.h"
 #include "ppapi/thunk/ppb_instance_api.h"
 #include "ppapi/thunk/resource_creation_api.h"
 
 namespace ppapi {
 namespace thunk {
 
 namespace {
 
 void SampleGamepads(PP_Instance instance, PP_GamepadsSampleData* data) {
-  EnterFunction<PPB_Instance_FunctionAPI> enter(instance, true);
+  EnterInstance enter(instance);
   if (enter.failed())
     return;
   enter.functions()->SampleGamepads(instance, data);
 }
 
 const PPB_Gamepad g_ppb_gamepad_thunk = {
   &SampleGamepads,
 };
 
 }  // namespace
 
 const PPB_Gamepad* GetPPB_Gamepad_1_0_Thunk() {
   return &g_ppb_gamepad_thunk;
 }
 
 }  // namespace thunk
 }  // namespace ppapi