Emergency API review

1) Remove 'current' in Emergency APIs
2) Hide getEmergencyServiceCategoryBitmask,
   and keep getEmergencyServiceCategories

Test: Treehugger
Bug: 122368381
Merged-In: I158874201a7ed8427cfe4ac4c4f39abe01217a37
Change-Id: I158874201a7ed8427cfe4ac4c4f39abe01217a37
diff --git a/src/com/android/phone/EmergencyDialer.java b/src/com/android/phone/EmergencyDialer.java
index cff27b1..38eb40d 100644
--- a/src/com/android/phone/EmergencyDialer.java
+++ b/src/com/android/phone/EmergencyDialer.java
@@ -851,7 +851,7 @@
             phoneToMakeCall = mShortcutViewConfig.getPhoneInfo();
         } else {
             TelephonyManager tm = getSystemService(TelephonyManager.class);
-            isEmergencyNumber = tm.isCurrentEmergencyNumber(mLastNumber);
+            isEmergencyNumber = tm.isEmergencyNumber(mLastNumber);
         }
 
         if (isEmergencyNumber) {