Fix warnings in Linux build.
Fix warnings in Linux build.

TBR=erikkay
BUG=None
TEST=None

Review URL: http://codereview.chromium.org/173623

git-svn-id: http://src.chromium.org/svn/trunk/src@24865 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 49f9e23f76fbce5cb9ea75a75719c1417ec5ba16
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