PopupWindow: Be more careful with FLAG_LAYOUT_NO_LIMITS

If we intend to clip to the screen we can't pass NO_LIMITS.
Luckily the default behavior for LAYOUT_IN_PARENT_FRAME is to not
clip to the parent frame, so we don't have to do anything except
update our local flag we use for explicit size calculations.

Bug: 28194524
Change-Id: I1465efce7f5412cf646bccd83e23a4b049f4dbc4

core/java/android/widget/PopupWindow.java

@@ -827,7 +827,6 @@ public class PopupWindow {
      */
     public void setClipToScreenEnabled(boolean enabled) {
         mClipToScreen = enabled;
-        setClippingEnabled(!enabled);
     }
 
     /**