sync: fix checkdeps failures

TBR=akalin
BUG=
TEST=

Review URL: http://codereview.chromium.org/7634027

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@96575 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/sync/util/DEPS

@@ -17,6 +17,8 @@ include_rules = [
   "+chrome/common/extensions",
   "+chrome/common/chrome_notification_types.h",
 
+  "+chrome/common/chrome_switches.h",
+  "+chrome/common/net/gaia/gaia_constants.h",
   "+chrome/common/random.h",
 ]