Fixing system so that it only closes open file browsers that currently point at the directories on that device.
Fixing system so that it only closes open file browsers that currently point at the directories on that device.

BUG=chromium-os:3468
TEST=none
Review URL: http://codereview.chromium.org/2639004

git-svn-id: http://src.chromium.org/svn/trunk/src@49105 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: ea750b62235f067ce5a7150d6b35523ada94b38f
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