Save the Keystone product ID in .patch/product_id on update disk images.
Save the Keystone product ID in .patch/product_id on update disk images.

Fix MIN_BUILD. Oops.

BUG=45017
TEST=none
Review URL: http://codereview.chromium.org/2833002

git-svn-id: http://src.chromium.org/svn/trunk/src@49690 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: e04257841cc9a7fd13b74e569aff11b51477b9cf
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