IMS-VT: Process display changed indication only for default display

On receiving display changed indication, query display state only
if the indication is for default display else ignore the indication.

Change-Id: I3be86f6e8abf7c3045cae38010a37eea186885b4
CRs-Fixed: 1040932
diff --git a/InCallUI/src/com/android/incallui/InCallUiStateNotifier.java b/InCallUI/src/com/android/incallui/InCallUiStateNotifier.java
index cd9dd4a..299c13b 100644
--- a/InCallUI/src/com/android/incallui/InCallUiStateNotifier.java
+++ b/InCallUI/src/com/android/incallui/InCallUiStateNotifier.java
@@ -200,10 +200,6 @@
      */
     @Override
     public void onDisplayChanged(int displayId) {
-        final int displayState = mDisplayManager.getDisplay(displayId).getState();
-        Log.d(this, "onDisplayChanged displayState: " + displayState +
-                " displayId: " + displayId);
-
         /* Ignore display changed indications if they are received for displays
          * other than default display
          */
@@ -212,6 +208,10 @@
             return;
         }
 
+        final int displayState = mDisplayManager.getDisplay(displayId).getState();
+        Log.d(this, "onDisplayChanged displayState: " + displayState +
+                " displayId: " + displayId);
+
         //Check UI's old state before updating corresponding state variable(s)
         final boolean wasShowing = isUiShowing();