Add clickUiObject to BaseUiAutomation

Convenience method to click on o UiObject and throw an exception if the view does not change within a specified timeout.

wlauto/external/uiauto/src/com/arm/wlauto/uiauto/BaseUiAutomation.java

@@ -142,6 +142,12 @@ public class BaseUiAutomation extends UiAutomatorTestCase {
         return object;
     }
 
+    public void clickUiObject(UiObject uiobject, long timeout) throws Exception {
+        if (!uiobject.clickAndWaitForNewWindow(timeout)) {
+            throw new UiObjectNotFoundException(String.format("Timeout waiting for New Window"));
+        }
+    }
+
     public int getDisplayHeight () {
         return getUiDevice().getInstance().getDisplayHeight();
     }