am 92630c78: Merge "SystemUI: Use new USB notifications to detect USB disconnect." into gingerbread

Merge commit '92630c787d0ae34c7ae3cb29c2d261f1acaf18b9' into gingerbread-plus-aosp

* commit '92630c787d0ae34c7ae3cb29c2d261f1acaf18b9':
  SystemUI: Use new USB notifications to detect USB disconnect.