GitLab

does not prevent caching of responses that are not 200,
and does not delete the cached response if not really needed.

For example, we should be able to cache redirects when the
request is made using a byte range.

BUG=134267
TEST=net_unittests
Review URL: https://chromiumcodereview.appspot.com/10829069

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@149069 0039d316-1c4b-4281-b951-d872f2087c98