linux: cut down on logging spam
linux: cut down on logging spam

Review URL: http://codereview.chromium.org/149546

git-svn-id: http://src.chromium.org/svn/trunk/src@20503 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 2933b83f5451dc16ab12a897209ad8197270337f
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