Pepper: Reduce includes in generated thunks.

ppapi/thunk/ppb_url_response_info_thunk.cc

Index: ppapi/thunk/ppb_url_response_info_thunk.cc
diff --git a/ppapi/thunk/ppb_url_response_info_thunk.cc b/ppapi/thunk/ppb_url_response_info_thunk.cc
index fe6ef08ed3ae0e29ebf860967b66f71ca8f92cd6..48bc04e5c68d23ba3677b9eb8efc2497ab8042e3 100644
--- a/ppapi/thunk/ppb_url_response_info_thunk.cc
+++ b/ppapi/thunk/ppb_url_response_info_thunk.cc
@@ -2,16 +2,14 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// From ppb_url_response_info.idl modified Thu Apr 25 13:21:08 2013.
+// From ppb_url_response_info.idl modified Tue Aug 20 08:13:36 2013.
 
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/c/ppb_url_response_info.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_url_response_info_api.h"
-#include "ppapi/thunk/resource_creation_api.h"
-#include "ppapi/thunk/thunk.h"
 
 namespace ppapi {
 namespace thunk {
@@ -49,7 +47,8 @@ const PPB_URLResponseInfo_1_0 g_ppb_urlresponseinfo_thunk_1_0 = {
 
 }  // namespace
 
-const PPB_URLResponseInfo_1_0* GetPPB_URLResponseInfo_1_0_Thunk() {
+PPAPI_THUNK_EXPORT const PPB_URLResponseInfo_1_0*
+    GetPPB_URLResponseInfo_1_0_Thunk() {
   return &g_ppb_urlresponseinfo_thunk_1_0;
 }