commit da6bb3883f11f75eb21d2ecc10bec7a2ce533539
author Sailesh Nepal <sail@google.com> Thu Apr 14 19:51:46 2016 -0700
committer Sailesh Nepal <sail@google.com> Fri Apr 15 02:23:59 2016 -0700
tree 74aeda6db10cf7cd01214e096316ac5d39f3babe
parent bb9fb194f85225fcf0360fc53da51f12a649bd1b

[Call Timing] Add constants for call timing extras

This CL defines new extras that can be set in a call's intent extras.
These extras track the following:
    CALL_CREATED_TIME_MILLIS - the time when the call was created by
	telephony (or another connection service)
    CALL_TELECOM_ROUTING_START_TIME_MILLIS - the time when telecom
	started processing the call
    CALL_TELECOM_ROUTING_END_TIME_MILLIS - the time when telecom
	finished processing things like call blocking and was ready to
	connect to the UI

These extras can be used by the dialer to track how long it takes for
calls to be shown to the user.

Bug: 28202119
Change-Id: I8fca259d449adedaeb4ff91d35bf59a7409be866