Delete FunctionGroupBase from Pepper.

ppapi/thunk/ppb_fullscreen_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_fullscreen.h"
 #include "ppapi/shared_impl/ppb_view_shared.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 {
 
 PP_Bool IsFullscreen(PP_Instance instance) {
-  EnterFunction<PPB_Instance_FunctionAPI> enter(instance, true);
+  EnterInstance enter(instance);
   if (enter.failed())
     return PP_FALSE;
   const ViewData* view = enter.functions()->GetViewData(instance);
   if (!view)
     return PP_FALSE;
   return PP_FromBool(view->is_fullscreen);
 }
 
 PP_Bool SetFullscreen(PP_Instance instance, PP_Bool fullscreen) {
-  EnterFunction<PPB_Instance_FunctionAPI> enter(instance, true);
+  EnterInstance enter(instance);
   if (enter.failed())
     return PP_FALSE;
   return enter.functions()->SetFullscreen(instance, fullscreen);
 }
 
 PP_Bool GetScreenSize(PP_Instance instance, PP_Size* size) {
-  EnterFunction<PPB_Instance_FunctionAPI> enter(instance, true);
+  EnterInstance enter(instance);
   if (enter.failed())
     return PP_FALSE;
   return enter.functions()->GetScreenSize(instance, size);
 }
 
 const PPB_Fullscreen g_ppb_fullscreen_thunk = {
   &IsFullscreen,
   &SetFullscreen,
   &GetScreenSize
 };
 
 }  // namespace
 
 const PPB_Fullscreen_1_0* GetPPB_Fullscreen_1_0_Thunk() {
   return &g_ppb_fullscreen_thunk;
 }
 
 }  // namespace thunk
 }  // namespace ppapi