Pepper: Reduce includes in generated thunks.

ppapi/thunk/ppb_printing_dev_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 dev/ppb_printing_dev.idl modified Fri Apr 19 10:45:09 2013.
+// From dev/ppb_printing_dev.idl modified Tue Aug 20 08:13:36 2013.
 
 #include "ppapi/c/dev/ppb_printing_dev.h"
 #include "ppapi/c/pp_completion_callback.h"
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/shared_impl/tracked_callback.h"
 #include "ppapi/thunk/enter.h"
-#include "ppapi/thunk/ppb_instance_api.h"
+#include "ppapi/thunk/ppapi_thunk_export.h"
 #include "ppapi/thunk/ppb_printing_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) {
   VLOG(4) << "PPB_Printing_Dev::Create()";
   EnterResourceCreation enter(instance);
   if (enter.failed())
@@ skipping 13 matching lines @@
       enter.callback()));
 }
 
 const PPB_Printing_Dev_0_7 g_ppb_printing_dev_thunk_0_7 = {
   &Create,
   &GetDefaultPrintSettings
 };
 
 }  // namespace
 
-const PPB_Printing_Dev_0_7* GetPPB_Printing_Dev_0_7_Thunk() {
+PPAPI_THUNK_EXPORT const PPB_Printing_Dev_0_7*
+    GetPPB_Printing_Dev_0_7_Thunk() {
   return &g_ppb_printing_dev_thunk_0_7;
 }
 
 }  // namespace thunk
 }  // namespace ppapi