Turn autofill sync on by default.
Turn autofill sync on by default.

BUG=46952
TEST=open sync customize dialog, note autofill checkbox, sync autofill entries successfully.

Review URL: http://codereview.chromium.org/2862020

git-svn-id: http://src.chromium.org/svn/trunk/src@50311 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: df61ec134d27627e9385d9b90d2cfe03b3d7847c
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser