Pepper: Reduce includes in generated thunks.

ppapi/thunk/ppb_device_ref_dev_thunk.cc

Index: ppapi/thunk/ppb_device_ref_dev_thunk.cc
diff --git a/ppapi/thunk/ppb_device_ref_dev_thunk.cc b/ppapi/thunk/ppb_device_ref_dev_thunk.cc
index 9045cd8441085152ae744c909887a75712fb5c5b..eb87093b5301bc1da3c672d69934c060cea8997d 100644
--- a/ppapi/thunk/ppb_device_ref_dev_thunk.cc
+++ b/ppapi/thunk/ppb_device_ref_dev_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 dev/ppb_device_ref_dev.idl modified Thu Dec 20 13:10:26 2012.
+// From dev/ppb_device_ref_dev.idl modified Tue Aug 20 08:13:36 2013.
 
 #include "ppapi/c/dev/ppb_device_ref_dev.h"
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/shared_impl/tracked_callback.h"
 #include "ppapi/thunk/enter.h"
+#include "ppapi/thunk/ppapi_thunk_export.h"
 #include "ppapi/thunk/ppb_device_ref_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 {
@@ -48,7 +46,8 @@ const PPB_DeviceRef_Dev_0_1 g_ppb_deviceref_dev_thunk_0_1 = {
 
 }  // namespace
 
-const PPB_DeviceRef_Dev_0_1* GetPPB_DeviceRef_Dev_0_1_Thunk() {
+PPAPI_THUNK_EXPORT const PPB_DeviceRef_Dev_0_1*
+    GetPPB_DeviceRef_Dev_0_1_Thunk() {
   return &g_ppb_deviceref_dev_thunk_0_1;
 }