Possible fix for monkey bug: 2529350

Don't try to show the extension if the main keyboard is not showing.

Change-Id: Ic3368f48f8973dedfb1ab8f4644b0766b52aed1b

java/src/com/android/inputmethod/latin/LatinKeyboardView.java

@@ -276,6 +276,10 @@ public class LatinKeyboardView extends KeyboardView {
     }
 
     private boolean openExtension() {
+        // If the current keyboard is not visible, don't show the popup
+        if (!isShown()) {
+            return false;
+        }
         if (((LatinKeyboard) getKeyboard()).getExtension() == 0) return false;
         makePopupWindow();
         mExtensionVisible = true;