GUI -- Rename UIMessageHandlerTwo => UIMessageHandler. Also, make bindHandlers() private.

Change-Id: Id36e220c1285b88b8b4db0e106ef063bd8b9bfd1
diff --git a/apps/test/intent-perf/src/main/java/org/onosproject/intentperf/IntentPerfUi.java b/apps/test/intent-perf/src/main/java/org/onosproject/intentperf/IntentPerfUi.java
index b3280c8..7118ee1 100644
--- a/apps/test/intent-perf/src/main/java/org/onosproject/intentperf/IntentPerfUi.java
+++ b/apps/test/intent-perf/src/main/java/org/onosproject/intentperf/IntentPerfUi.java
@@ -31,7 +31,7 @@
 import org.onosproject.ui.UiConnection;
 import org.onosproject.ui.UiExtension;
 import org.onosproject.ui.UiExtensionService;
-import org.onosproject.ui.UiMessageHandlerTwo;
+import org.onosproject.ui.UiMessageHandler;
 import org.onosproject.ui.UiView;
 
 import java.util.Collection;
@@ -97,13 +97,13 @@
     }
 
     // Creates and returns session specific message handler.
-    private Collection<UiMessageHandlerTwo> newHandlers() {
+    private Collection<UiMessageHandler> newHandlers() {
         return ImmutableList.of(new StreamingControl());
     }
 
 
     // UI Message handlers for turning on/off reporting to a session.
-    private class StreamingControl extends UiMessageHandlerTwo {
+    private class StreamingControl extends UiMessageHandler {
 
         private boolean streamingEnabled = false;