update_homebrew: support version-formatted revisions

update_homebrew: support version-formatted revisions

fix for running in checked mode

R=whesse@google.com

Committed: https://github.com/dart-lang/sdk/commit/856248f1356d1e7564c8b27dcbe35c770cde2eb5

[kevmoo, 2015-06-01 22:46:07]

kevmoo@google.com changed reviewers:
+ whesse@google.com

[Bill Hesse, 2015-06-02 08:36:29]

lgtm

[Bill Hesse, 2015-06-02 16:14:07]

I tried running this to update the stable channel, and it failed, with an error
I could not debug.  I had patched this in to tot, and run pub get.

I reverted to the version of update-homebrew before the async-await change, and
patched in this change, and was able to run it, updating stable to r45692.

Please check that the app works now, before (or after) committing this change. 
This change seems right, though.

[kevmoo, 2015-06-02 17:02:16]

Committed patchset #1 (id:1) manually as
856248f1356d1e7564c8b27dcbe35c770cde2eb5 (presubmit successful).

[Bill Hesse, 2015-06-03 09:26:26]

On 2015/06/02 16:14:07, Bill Hesse wrote:
> I tried running this to update the stable channel, and it failed, with an
error
> I could not debug.  I had patched this in to tot, and run pub get.
> 
> I reverted to the version of update-homebrew before the async-await change,
and
> patched in this change, and was able to run it, updating stable to r45692.
> 
> Please check that the app works now, before (or after) committing this change.

> This change seems right, though.

This failure was due to my installed dart version being out of date (Version
1.9).  When I updated my dart executable, it worked.