Apply -lgcov link to type loadable_bundle when building coverage=1.
Apply -lgcov link to type loadable_bundle when building coverage=1.

Review URL: http://codereview.chromium.org/515045

git-svn-id: http://src.chromium.org/svn/trunk/src@35307 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 84d7ac3abebff2514a45b1fdcf1dc25e8483dac0
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