Pepper: Reduce includes in generated thunks.

ppapi/thunk/ppb_messaging_thunk.cc

Index: ppapi/thunk/ppb_messaging_thunk.cc
diff --git a/ppapi/thunk/ppb_messaging_thunk.cc b/ppapi/thunk/ppb_messaging_thunk.cc
index d485b3d86436577cc634b392d3fb8c7d12190962..fb936b8e0aa2932455a5b940ba9070b277583651 100644
--- a/ppapi/thunk/ppb_messaging_thunk.cc
+++ b/ppapi/thunk/ppb_messaging_thunk.cc
@@ -2,15 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// From ppb_messaging.idl modified Tue Apr 16 11:25:44 2013.
+// From ppb_messaging.idl modified Tue Aug 20 08:13:36 2013.
 
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/c/ppb_messaging.h"
 #include "ppapi/shared_impl/tracked_callback.h"
 #include "ppapi/thunk/enter.h"
-#include "ppapi/thunk/ppb_instance_api.h"
-#include "ppapi/thunk/resource_creation_api.h"
-#include "ppapi/thunk/thunk.h"
+#include "ppapi/thunk/ppapi_thunk_export.h"
 
 namespace ppapi {
 namespace thunk {
@@ -31,7 +29,7 @@ const PPB_Messaging_1_0 g_ppb_messaging_thunk_1_0 = {
 
 }  // namespace
 
-const PPB_Messaging_1_0* GetPPB_Messaging_1_0_Thunk() {
+PPAPI_THUNK_EXPORT const PPB_Messaging_1_0* GetPPB_Messaging_1_0_Thunk() {
   return &g_ppb_messaging_thunk_1_0;
 }