Disable the json_schema_unittest since it crashes after a WebKit deps roll.
Disable the json_schema_unittest since it crashes after a WebKit deps roll.

TBR=nsylvain
TEST=Unit tests now work.
BUG=22971

Review URL: http://codereview.chromium.org/231024

git-svn-id: http://src.chromium.org/svn/trunk/src@27144 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: d29c214220806cf45d71122b6e659536b48e733f
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