Unescape username and realm from X-Auto-Login header
Unescape username and realm from X-Auto-Login header

BUG=none
TEST=Go to a Gaia login page where the username is already entered, check that X-Auto-Login is working.


Review URL: http://codereview.chromium.org/9193010

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@118830 0039d316-1c4b-4281-b951-d872f2087c98

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