Becky Siegel 89fe0501e1 Utilize gr-patch-range-select in the change view
Slight refactoring required in order to satisfy both use cases:
- Fire an event when patch range changes and let parent element
  handle it.
- Support comment strings
- availablePatches becomes an array of objects instead of an
  array of integers.

Change-Id: Ia8da9296f41eb2d45c9358d03fbec3940273ad9d
2017-09-14 13:47:38 -07:00
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