Add dart2dart_bot rule.

Add dart2dart_bot rule.

Committed: https://code.google.com/p/dart/source/detail?r=21012

[floitsch, 2013-04-06 00:08:40]

TBR.

[floitsch, 2013-04-06 00:09:30]

Committed patchset #2 manually as r21012 (presubmit successful).

[Ivan Posva, 2013-04-06 00:09:45]

LGTMwC

-Ivan

https://codereview.chromium.org/13722025/diff/2001/dart.gyp
File dart.gyp (right):

https://codereview.chromium.org/13722025/diff/2001/dart.gyp#newcode69
dart.gyp:69: 'packages'
Please add a TODO or make sure in some other way to remove this on Monday when
the buildbot has been updated.

[floitsch, 2013-04-06 00:15:11]

On 2013/04/06 00:09:45, Ivan Posva wrote:
> LGTMwC
> 
> -Ivan
> 
> https://codereview.chromium.org/13722025/diff/2001/dart.gyp
> File dart.gyp (right):
> 
> https://codereview.chromium.org/13722025/diff/2001/dart.gyp#newcode69
> dart.gyp:69: 'packages'
> Please add a TODO or make sure in some other way to remove this on Monday when
> the buildbot has been updated.
Yes. I created a Bug with link to this CL.

[floitsch, 2013-04-06 00:15:43]

On 2013/04/06 00:15:11, floitsch wrote:
> On 2013/04/06 00:09:45, Ivan Posva wrote:
> > LGTMwC
> > 
> > -Ivan
> > 
> > https://codereview.chromium.org/13722025/diff/2001/dart.gyp
> > File dart.gyp (right):
> > 
> > https://codereview.chromium.org/13722025/diff/2001/dart.gyp#newcode69
> > dart.gyp:69: 'packages'
> > Please add a TODO or make sure in some other way to remove this on Monday
when
> > the buildbot has been updated.
> Yes. I created a Bug with link to this CL.
http://dartbug.com/9704