am 5bf21fb2: merge in KQS81M

* commit '5bf21fb2695457200ab8a271d84055f24e3072fc':
  Tear down proximity sensors when no longer in use.
  Calls to binder safe after disconnection of service.
  Adding logging to capture MessageHandler ordering.
  Make creations and destruction of InCallUI system queued.
  Fix null precondition check.
  Show glowpad for call waiting calls
  Move initializeInCall to onStart().
  Removing explicit dependency on http calls.
  Show gateway UI when dialing via a gateway
  Disabling quick response since it's not done yet.
  Adding proximity sensor code to in-call UI.
  Support connecting and disconnecting from Phone app.
  Fix NullPointerException in InCallUI with CallTimer.

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