GitLab

For a detailed description see part #1, http://codereview.chromium.org/6478005/

This CL fixes the bug fully on Windows. More platforms will follow.

BUG=61062
TEST=unit_tests, possibly more
Review URL: http://codereview.chromium.org/7601006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@96269 0039d316-1c4b-4281-b951-d872f2087c98