Accept remote urls as gospel in git_cache.

Accept remote urls as gospel in git_cache.

git_cache rewrites all urls to https://netloc/path when
setting them as remote urls. This doesn't work when the
remote is actually local on disk, and the "url" is a
/path/to/repo. This seems like an unlikely case, but it
is leveraged by testing, and it doesn't hurt to support
it, so now we do.

R=iannucci@chromium.org
BUG=261619
Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=256386

[iannucci, 2014-03-12 00:47:15]

Please update description (and/or bug) with a 'why'?

[iannucci, 2014-03-12 00:47:43]

other than that, lgtm.

[agable, 2014-03-12 00:49:48]

On 2014/03/12 00:47:43, iannucci wrote:
> other than that, lgtm.

Done.

[agable, 2014-03-12 00:49:53]

The CQ bit was checked by agable@chromium.org

[commit-bot: I haz the power, 2014-03-12 01:07:50]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/agable@chromium.org/196493002/1

[commit-bot: I haz the power, 2014-03-12 01:26:02]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-03-12 01:26:03]

Presubmit check for 196493002-1 failed and returned exit status -2001.
The presubmit check was hung. It took 900.0 seconds to execute and the time
limit is 900.0 seconds.

Running presubmit commit checks ...

[agable, 2014-03-12 01:41:55]

The CQ bit was checked by agable@chromium.org

[commit-bot: I haz the power, 2014-03-12 01:42:06]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/agable@chromium.org/196493002/1

[commit-bot: I haz the power, 2014-03-12 01:43:40]

Change committed as 256386