Fix unused_variable_warning.
Fix unused_variable_warning.

BUG=none
TEST=none
Review URL: http://codereview.chromium.org/6708092

git-svn-id: http://src.chromium.org/svn/trunk/src@78999 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 897779efaee466757f8b7b5b163d002a9cd087fb
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