Add more tests for recursive DirectoryWatcher watches.
Add more tests for recursive DirectoryWatcher watches.

Review URL: http://codereview.chromium.org/100346

git-svn-id: http://src.chromium.org/svn/trunk/src@15283 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 9057c34f5ed6498aac1eea9b935e208d0534e18d
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