Make the 0 value of the enum match 'fail' to satisfy DCHECKs.
Make the 0 value of the enum match 'fail' to satisfy DCHECKs.

git-svn-id: http://src.chromium.org/svn/trunk/src@35392 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 73fb04ae5fcee00abd6c03ecec3710dd9e7494a0
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