Motorola-Mobility/montage — pull request #989 by kriskowal (2012-07-31 22:47:02+00:00)
Title: Fixed core/promise property descriptors

This change theoretically fixes Montage on the Chrome development release, presuming that Chrome started enforcing writable properties down the prototype chain.

To patch an alternate branch:

```
$ git fetch kriskowal
$ git cherry-pick 5532d74
```