fix another compile error on windows.
fix another compile error on windows.

Review URL: http://codereview.chromium.org/3052032

git-svn-id: http://src.chromium.org/svn/trunk/src@54470 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 02aee74e103ed327b0f0cf698ec5f72ba2c9e4be
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