Remove mac_util header from proxy_config_service_mac.cc

Review URL: http://codereview.chromium.org/8523030

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@110313 0039d316-1c4b-4281-b951-d872f2087c98

net/proxy/proxy_config_service_mac.cc

@@ -9,7 +9,6 @@
 
 #include "base/logging.h"
 #include "base/mac/foundation_util.h"
-#include "base/mac/mac_util.h"
 #include "base/mac/scoped_cftyperef.h"
 #include "base/message_loop.h"
 #include "base/sys_string_conversions.h"