Make the Pepper proxy support in-process font rendering.

ppapi/thunk/ppb_image_data_api.h

 // 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.
 
-#ifndef PPAPI_THUNK_IMAGE_DATA_API_H_
-#define PPAPI_THUNK_IMAGE_DATA_API_H_
+#ifndef PPAPI_THUNK_PPB_IMAGE_DATA_API_H_
+#define PPAPI_THUNK_PPB_IMAGE_DATA_API_H_
 
 #include "ppapi/c/pp_bool.h"
 #include "ppapi/c/ppb_image_data.h"
 
 namespace ppapi {
 namespace thunk {
 
 class PPB_ImageData_API {
  public:
   virtual PP_Bool Describe(PP_ImageDataDesc* desc) = 0;
   virtual void* Map() = 0;
   virtual void Unmap() = 0;
 };
 
 }  // namespace thunk
 }  // namespace ppapi
 
-#endif  // PPAPI_THUNK_IMAGE_DATA_API_H_
+#endif  // PPAPI_THUNK_PPB_IMAGE_DATA_API_H_