Pepper: Reduce includes in generated thunks.

ppapi/thunk/ppb_isolated_file_system_private_thunk.cc

Index: ppapi/thunk/ppb_isolated_file_system_private_thunk.cc
diff --git a/ppapi/thunk/ppb_isolated_file_system_private_thunk.cc b/ppapi/thunk/ppb_isolated_file_system_private_thunk.cc
index cd58b24527eb9c73966d8fc689204bbe67a50456..6b328592d1569501955f0da78fbfa7afb7088bd7 100644
--- a/ppapi/thunk/ppb_isolated_file_system_private_thunk.cc
+++ b/ppapi/thunk/ppb_isolated_file_system_private_thunk.cc
@@ -3,17 +3,15 @@
 // found in the LICENSE file.
 
 // From private/ppb_isolated_file_system_private.idl,
-//   modified Fri Nov  8 02:21:15 2013.
+//   modified Mon Nov 25 11:17:07 2013.
 
 #include "ppapi/c/pp_completion_callback.h"
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/c/private/ppb_isolated_file_system_private.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_isolated_file_system_private_api.h"
-#include "ppapi/thunk/resource_creation_api.h"
-#include "ppapi/thunk/thunk.h"
 
 namespace ppapi {
 namespace thunk {
@@ -42,7 +40,7 @@ const PPB_IsolatedFileSystem_Private_0_2
 
 }  // namespace
 
-const PPB_IsolatedFileSystem_Private_0_2*
+PPAPI_THUNK_EXPORT const PPB_IsolatedFileSystem_Private_0_2*
     GetPPB_IsolatedFileSystem_Private_0_2_Thunk() {
   return &g_ppb_isolatedfilesystem_private_thunk_0_2;
 }