Pepper: Reduce includes in generated thunks.

ppapi/thunk/ppb_image_data_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.
 
-// From ppb_image_data.idl modified Thu Jun  6 18:05:40 2013.
+// From ppb_image_data.idl modified Tue Aug 20 08:13:36 2013.
 
 #include <string.h>
 
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/c/ppb_image_data.h"
 #include "ppapi/shared_impl/ppb_image_data_shared.h"
 #include "ppapi/shared_impl/tracked_callback.h"
 #include "ppapi/thunk/enter.h"
+#include "ppapi/thunk/ppapi_thunk_export.h"
 #include "ppapi/thunk/ppb_image_data_api.h"
-#include "ppapi/thunk/ppb_instance_api.h"
-#include "ppapi/thunk/resource_creation_api.h"
-#include "ppapi/thunk/thunk.h"
 
 namespace ppapi {
 namespace thunk {
 
 namespace {
 
 PP_ImageDataFormat GetNativeImageDataFormat(void) {
   VLOG(4) << "PPB_ImageData::GetNativeImageDataFormat()";
   return PPB_ImageData_Shared::GetNativeImageDataFormat();
 }
@@ skipping 54 matching lines @@
   &IsImageDataFormatSupported,
   &Create,
   &IsImageData,
   &Describe,
   &Map,
   &Unmap
 };
 
 }  // namespace
 
-const PPB_ImageData_1_0* GetPPB_ImageData_1_0_Thunk() {
+PPAPI_THUNK_EXPORT const PPB_ImageData_1_0* GetPPB_ImageData_1_0_Thunk() {
   return &g_ppb_imagedata_thunk_1_0;
 }
 
 }  // namespace thunk
 }  // namespace ppapi