Pull in repo v1.18 script for matching repo v1.11.1 update.

Pull in repo v1.18 script for matching repo v1.11.1 update.

BUG=chromium-os:37471
TEST=manual invocations, tracking upstream code, running these
     versions on builders for validation in addition.

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=174609

[ferringb, 2012-12-25 14:51:51]

TBR on this one (assuming my commit access is here); the changes here are well
vetted, and the updating of this is purely to silence the usual "your repo
script is old, cp blah over to blah to fix it".

[commit-bot: I haz the power, 2012-12-25 14:52:01]

No LGTM from a valid reviewer yet. Only full committers are accepted.
Even if an LGTM may have been provided, it was from a non-committer or
a lowly provisional committer, _not_ a full super star committer.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.

[ferringb, 2012-12-25 14:53:10]

So much for TBR.  Would be useful if I could actually maintain this script
(including review) since issues with it fall on my head...

[M-A Ruel, 2012-12-25 17:00:25]

lgtm

[commit-bot: I haz the power, 2012-12-25 17:00:28]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/ferringb@google.com/11660027/1

[commit-bot: I haz the power, 2012-12-25 17:02:38]

Change committed as 174609

[ferringb, 2012-12-25 23:28:24]

On 2012/12/25 17:02:38, I haz the power (commit-bot) wrote:
> Change committed as 174609

Thanks for the xmas day review (I was expecting that to sit for a while) :)