Add Connection.setStatusHints

This CL allows a connection to specify a status hint. The hint
contains a label and icon that can be displayed in the InCallUI.
For example, wifi calling can set a wifi icon and ssid.

Change-Id: I125628b74784d2303b9a429038a9f7ee604f241e

telecomm/java/android/telecomm/RemoteConnectionService.java

@@ -201,6 +201,14 @@ final class RemoteConnectionService implements DeathRecipient {
                 mConnection.setAudioModeIsVoip(isVoip);
             }
         }
+
+        /** ${inheritDoc} */
+        @Override
+        public final void setStatusHints(String connectionId, StatusHints statusHints) {
+            if (isCurrentConnection(connectionId)) {
+                mConnection.setStatusHints(statusHints);
+            }
+        }
     };
 
     RemoteConnectionService(ComponentName componentName, IConnectionService connectionService)