Pepper: Reduce includes in generated thunks.

ppapi/thunk/ppb_file_system_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_file_system.idl modified Thu Dec 20 13:10:26 2012.
+// From ppb_file_system.idl modified Tue Aug 20 08:13:36 2013.
 
 #include "ppapi/c/pp_completion_callback.h"
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/c/ppb_file_system.h"
 #include "ppapi/shared_impl/tracked_callback.h"
 #include "ppapi/thunk/enter.h"
+#include "ppapi/thunk/ppapi_thunk_export.h"
 #include "ppapi/thunk/ppb_file_system_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_Resource Create(PP_Instance instance, PP_FileSystemType type) {
   VLOG(4) << "PPB_FileSystem::Create()";
   EnterResourceCreation enter(instance);
   if (enter.failed())
@@ skipping 27 matching lines @@
 
 const PPB_FileSystem_1_0 g_ppb_filesystem_thunk_1_0 = {
   &Create,
   &IsFileSystem,
   &Open,
   &GetType
 };
 
 }  // namespace
 
-const PPB_FileSystem_1_0* GetPPB_FileSystem_1_0_Thunk() {
+PPAPI_THUNK_EXPORT const PPB_FileSystem_1_0* GetPPB_FileSystem_1_0_Thunk() {
   return &g_ppb_filesystem_thunk_1_0;
 }
 
 }  // namespace thunk
 }  // namespace ppapi