Use macros to define pepper interfaces

ppapi/thunk/ppb_context_3d_thunk.cc

 // Copyright (c) 2011 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/pp_errors.h"
 #include "ppapi/thunk/thunk.h"
 #include "ppapi/thunk/enter.h"
 #include "ppapi/thunk/ppb_context_3d_api.h"
 #include "ppapi/thunk/resource_creation_api.h"
 
@@ skipping 46 matching lines @@
 const PPB_Context3D_Dev g_ppb_context_3d_thunk = {
   &Create,
   &IsContext3D,
   &GetAttrib,
   &BindSurfaces,
   &GetBoundSurfaces
 };
 
 }  // namespace
 
-const PPB_Context3D_Dev* GetPPB_Context3D_Thunk() {
+const PPB_Context3D_Dev* GetPPB_Context3D_Dev_Thunk() {
   return &g_ppb_context_3d_thunk;
 }
 
 }  // namespace thunk
 }  // namespace ppapi