Linux: Restrict access to xdg-mime functions to the FILE thread.
Linux: Restrict access to xdg-mime functions to the FILE thread.

BUG=none
TEST=none
Review URL: http://codereview.chromium.org/6312195

git-svn-id: http://src.chromium.org/svn/trunk/src@74183 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: ac4e4b497e4b6b3ff94899204fdc9f286c66ba19
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