Disabled select element should not fire onchange event. When dragging a disabled select element it would fire an onchange event, because there was no cached selected item. Added a check before firing the event to prevent it if the element is disabled.

BUG=215494
TEST=fast/forms/select/listbox-disabled-scroll-no-onchange.html

Review URL: https://chromiumcodereview.appspot.com/14931006

git-svn-id: svn://svn.chromium.org/blink/trunk@149781 bbb929c8-8fbe-4397-9dbb-9b2b20218538
3 files changed