Fix breakpad unused variable warning.
Fix breakpad unused variable warning.

BUG=none
TEST=none
TBR=agl
Review URL: http://codereview.chromium.org/251035

git-svn-id: http://src.chromium.org/svn/trunk/src@27541 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 45cae7faab5edd00f30bd1eef49c8aa0b1e2fa69
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