Fix UserAvatarView.setDisabled method.

Currently, we grey out the icon only when setDisabled method is called
and the icon is not already disabled. This would be a problem, if the
drawable is updated again. Updated to change the disabled state of the
icon in onDraw.

Bug: 26737161
Change-Id: Id166c05c3be3b1ebd9320b8f75f25a5a5cd12210
1 file changed