Set default sync notification method to "server".
Set default sync notification method to "server".

BUG=34647
TEST=manual

Review URL: http://codereview.chromium.org/2822044

git-svn-id: http://src.chromium.org/svn/trunk/src@51494 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: ac7a1c49499503c1d93cfc49ea9d5f731c3272ed
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