tree 945aeb17cbaf6f614a5bc098516ddb720ffe8fb6
parent 19ac71d04272951270d282c6d28d926a49598742
author Ta-wei Yen <twyen@google.com> 1468361775 -0700
committer Ta-wei Yen <twyen@google.com> 1468361775 -0700

Implement UI for changing voicemail PIN

The temporary dialog for chagin PIN is replaced.

The setting still reside in Dialer->settings->call->voicemail
https://screenshot.googleplex.com/gKzDdP9DnHH

To change the PIN, the user must enter their old PIN first.
https://screenshot.googleplex.com/jMBcrkiJquJ
Which will be checked with the server.
https://screenshot.googleplex.com/38iz4wOySF9
https://screenshot.googleplex.com/mxjnXgSWNAH

After the old PIN is confirmed, the user then proceed to enter the new
PIN.
The length requirement from the server will be enforced.
https://screenshot.googleplex.com/d7cigtR08di
https://screenshot.googleplex.com/0MVVzViuArP
https://screenshot.googleplex.com/mwnRda213HO

The user then must confirm their new PIN
https://screenshot.googleplex.com/4R9T5m3sPp4
https://screenshot.googleplex.com/GHmqSDxPr1z

The change will be commited to the server
https://screenshot.googleplex.com/38iz4wOySF9

If it succeeded, the user will return to the setting screen, and a
toast will be shown.
https://screenshot.googleplex.com/a7qPxQOvPJm
else an error message will be shown, and the user will return to the
enter new PIN step.

If the default PIN was set by the OMTP client before, the user will be
asked to "Set PIN" instead
https://screenshot.googleplex.com/RPYRxqOFSkw

The default PIN will be validated first
https://screenshot.googleplex.com/bYZcROA560B
If the server rejects the default PIN, The flow will continue as the
regular change PIN process. Else the enter old pin step is by passed
and the user will go to the enter new PIN step directly.
If other error happens in this step, a message will be shown
https://screenshot.googleplex.com/YRKLo5VmGzL
and the user will then return to the settings screen

+ All phone account dependent storaged is moved to
  VisualVoicemailPreferences.
- Retry in OmtpSyncService is removed. It was never ran, and a new retry
  mechanism will be added later.

Fixes: 29082418
Fixes: 29102412
Fixes: 29903609

Change-Id: I28dcc08113120abedd907fa8faffd3eb00bd87b4