Apply TtsSpan to known phone numbers in contact interactions

The primary content description in ContactInteraction must be
made a Spannable so that the TtsSpan can be progated from the
Loader (where the ContactInteraction is constructed) up to the
ExpandingEntryCardView.

Bug 17322140

Change-Id: If668f27cab20822f3c80aab606089e6b6f2a96c0
6 files changed