Hi,
it looks like QtWebKit was superceded by QtWebEngine. Clicking together a quick sample shows the animations working for me without any more work required:
import QtQuick 2.0 import QtQuick.Window 2.0 import QtWebEngine 1.0 Window { width: 1024 height: 768 WebEngineView { anchors.fill: parent url: "http://mapshakers.com/projects/leaflet-pulse-icon/" } }Best