AutoFill: Only use 'AutoFill preferences' for Mac.
AutoFill: Only use 'AutoFill preferences' for Mac.

BUG=50102
TEST=none

Review URL: http://codereview.chromium.org/3017030

git-svn-id: http://src.chromium.org/svn/trunk/src@53676 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: ad4f228f77d6d06aab34bd5b43f77ecb24e592d5
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