Coverage: Fix the coverage target.  interactive_ui_tests.gypi is already included.
Coverage: Fix the coverage target.  interactive_ui_tests.gypi is already
included.

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/2800024

git-svn-id: http://src.chromium.org/svn/trunk/src@50536 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 1505897194cea692f29fcdafcbc789c2c2697029
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