API cleanups.

Renames for methods/properties which were cleaned up during API review.

Test: Run Telecom and Telephony CTS tests.
Test: Run Telephony unit tests.
Test: Perform manual single-party-conference regression test to confirm
that conference behavior does not regress.
Bug: 148286830
Bug: 148284863
Bug: 148284843
Bug: 148287068
Bug: 148285484
Bug: 148285560

Change-Id: I2e6d7c8279e09479fbbf952b409680273a315519
diff --git a/src/com/android/phone/NotificationMgr.java b/src/com/android/phone/NotificationMgr.java
index 66017e4..6f7022f 100644
--- a/src/com/android/phone/NotificationMgr.java
+++ b/src/com/android/phone/NotificationMgr.java
@@ -478,7 +478,7 @@
 
     private Intent getShowVoicemailIntentForDefaultDialer(UserHandle userHandle) {
         String dialerPackage = mContext.getSystemService(TelecomManager.class)
-                .getDefaultDialerPackage(userHandle.getIdentifier());
+                .getDefaultDialerPackage(userHandle);
         return new Intent(TelephonyManager.ACTION_SHOW_VOICEMAIL_NOTIFICATION)
                 .setPackage(dialerPackage);
     }