[Sync] Roll google-cache-invalidation-api to @80.
[Sync] Roll google-cache-invalidation-api to @80.

@80 contains a minor addition to one of the cache invalidation protobuf files.

BUG=
TEST=


Review URL: http://codereview.chromium.org/6813002

git-svn-id: http://src.chromium.org/svn/trunk/src@80843 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 437608376cd70ecb949dd2d340651fc7df86bb65
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