HorizontalScrollView should delay child presses

In Recents in landscape, we were seeing blue flashes when scrolling; generally, almost every scrolling container should be delaying child presses to prevent this problem

Author: mikejurka

core/java/android/widget/HorizontalScrollView.java

@@ -696,6 +696,11 @@ public boolean onGenericMotionEvent(MotionEvent event) {
         return super.onGenericMotionEvent(event);
     }
 
+    @Override
+    public boolean shouldDelayChildPressedState() {
+        return true;
+    }
+
     @Override
     protected void onOverScrolled(int scrollX, int scrollY,
             boolean clampedX, boolean clampedY) {