Changed dialog shown from "Take Bug Report" to display 2 options:

* Normal Report: the new, enhanced option is more user-friendly (it
  shows a system notification with the progress, allow user to cancel,
  etc...), at the cost of consuming more resources. When this option is
  selected, the bugreport will be delayed 2 seconds so user can dismiss
  the Settings app before a screenshot is taken.

* Emergency Report: a lighter approach that is less intrusive and
  should be use when the phone is unresponsive or too slow.

BUG: 26034608
BUG: 11665244

Change-Id: If9c0242a163c8c33adecfc8a65af561e839bab8d