Add assisted dialing properties to the framework.

This is a manual merge of the oc-mr1-dev change
I086e761ada9a57dca61c3a412561ee54255d6260

These properties allow the feature to be propogated from
the outgoing call broadcast, to the connection, to the call,
and finally to the call log as a feature.

Test: no existing unit tests found. could use some pointers
Bug: 35963245
Change-Id: I84343fb0cda16514c01997fd71d1e819b5b7eebb
diff --git a/telecomm/java/android/telecom/Connection.java b/telecomm/java/android/telecom/Connection.java
index 3c32614..aaef8d3 100644
--- a/telecomm/java/android/telecom/Connection.java
+++ b/telecomm/java/android/telecom/Connection.java
@@ -399,8 +399,14 @@
      */
     public static final int PROPERTY_IS_RTT = 1 << 8;
 
+    /**
+     * Set by the framework to indicate that a connection is using assisted dialing.
+     * @hide
+     */
+    public static final int PROPERTY_ASSISTED_DIALING_USED = 1 << 9;
+
     //**********************************************************************************************
-    // Next PROPERTY value: 1<<9
+    // Next PROPERTY value: 1<<10
     //**********************************************************************************************
 
     /**