API review PhoneManager -> TelecommManager. Rename methods (6/6)

PhoneManager
- handlePinMMI docs should explain what a Pin is and what MMI is
- rename isInAPhoneCall to isInCall
- rename showCallScreen to showInCallScreen
- merge this class into TelecommManager, we don't need both

Bug: 16960458

Change-Id: I7d573e27ed093f2ddb7849703cc62f9916835393
diff --git a/media/java/android/media/AudioService.java b/media/java/android/media/AudioService.java
index 0af2457..dae539b 100644
--- a/media/java/android/media/AudioService.java
+++ b/media/java/android/media/AudioService.java
@@ -2912,13 +2912,13 @@
     }
 
     private boolean isInCommunication() {
-        boolean isInAPhoneCall = false;
+        boolean IsInCall = false;
 
         TelecommManager telecommManager =
                 (TelecommManager) mContext.getSystemService(Context.TELECOMM_SERVICE);
-        isInAPhoneCall = telecommManager.isInAPhoneCall();
+        IsInCall = telecommManager.isInCall();
 
-        return (isInAPhoneCall || getMode() == AudioManager.MODE_IN_COMMUNICATION);
+        return (IsInCall || getMode() == AudioManager.MODE_IN_COMMUNICATION);
     }
 
     /**