Add hidden class in framework for managing the default dialer settings

Bug: 20303635
Change-Id: I7e7318086ade9531fb85f08b8e3f1f001ee0a8d9
diff --git a/core/java/android/provider/Settings.java b/core/java/android/provider/Settings.java
index a622a21..142e52d 100644
--- a/core/java/android/provider/Settings.java
+++ b/core/java/android/provider/Settings.java
@@ -5361,6 +5361,12 @@
         public static final String SMS_DEFAULT_APPLICATION = "sms_default_application";
 
         /**
+         * Specifies the package name currently configured to be the default dialer application
+         * @hide
+         */
+        public static final String DIALER_DEFAULT_APPLICATION = "dialer_default_application";
+
+        /**
          * Specifies the package name currently configured to be the emergency assistance application
          *
          * @see android.telephony.TelephonyManager#ACTION_EMERGENCY_ASSISTANCE