Fix Windows build by qualifying the namespace.
Fix Windows build by qualifying the namespace.

TEST=none
BUG=none

git-svn-id: http://src.chromium.org/svn/trunk/src@54457 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 31e76cd6870e574f331ed2d8d3fbf753bcc286b0
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