Do not delete cookies when deleting history.
Do not delete cookies when deleting history.

BUG=35302
TEST=delete history of last day, check cookies

Review URL: http://codereview.chromium.org/593046

git-svn-id: http://src.chromium.org/svn/trunk/src@38723 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: de5daadd5b694afa60560714aa958a85e0653f54
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