Rename PROPERTY_SHOW_CALLBACK_NUMBER

This property actually indicates emergency callback mode.

Change-Id: I334cb5a702040768b879ca6189a9ab25237dd49d
Fix: 30005987
diff --git a/telecomm/java/android/telecom/Connection.java b/telecomm/java/android/telecom/Connection.java
index a093d54..2eb37df 100644
--- a/telecomm/java/android/telecom/Connection.java
+++ b/telecomm/java/android/telecom/Connection.java
@@ -327,7 +327,7 @@
      *
      * @hide
      */
-    public static final int PROPERTY_SHOW_CALLBACK_NUMBER = 1<<0;
+    public static final int PROPERTY_EMERGENCY_CALLBACK_MODE = 1<<0;
 
     /**
      * Whether the call is a generic conference, where we do not know the precise state of
@@ -655,8 +655,8 @@
             builder.append("Properties:");
         }
 
-        if (can(properties, PROPERTY_SHOW_CALLBACK_NUMBER)) {
-            builder.append(isLong ? " PROPERTY_SHOW_CALLBACK_NUMBER" : " clbk");
+        if (can(properties, PROPERTY_EMERGENCY_CALLBACK_MODE)) {
+            builder.append(isLong ? " PROPERTY_EMERGENCY_CALLBACK_MODE" : " ecbm");
         }
 
         if (can(properties, PROPERTY_HIGH_DEF_AUDIO)) {