[SVG2] The exposed event target should be the <use> element.

LayoutTests/svg/custom/resources/use-instanceRoot-event-bubbling.js

 window.testIsAsync = true;
 description("Tests whether SVG event bubbling works across shadow trees.");
 
 var svgNS = "http://www.w3.org/2000/svg";
 var xhtmlNS = "http://www.w3.org/1999/xhtml";
 var expected = new Array(4);
 var tests = 4;
 var counter = 0;
 var eventCounter = 0;
 
@@ skipping 38 matching lines @@
 }
 
 function nextTest()
 {
     eventCounter = 0;
     ++counter;
 
     switch (counter) {
     case 1:
         rect.onclick = function(evt) { eventHandler(evt, 1); };
-        expected[0] = "[EventHandler 1] type: click phase: AT_TARGET target: [object SVGUseElement] (id: use) currentTarget: [object SVGUseElement] (id: use)";
+        expected[0] = "[EventHandler 1] type: click phase: AT_TARGET target: [object SVGRectElement] (id: rect) currentTarget: [object SVGRectElement] (id: rect)";
         testListeners();
         break;
     case 2:
         rectContainer.addEventListener("click", function(evt) { eventHandler(evt, 2) }, false);
-        expected[1] = "[EventHandler 2] type: click phase: AT_TARGET target: [object SVGUseElement] (id: use) currentTarget: [object SVGUseElement] (id: use)";
+        expected[1] = "[EventHandler 2] type: click phase: BUBBLING target: [object SVGRectElement] (id: rect) currentTarget: [object SVGGElement] (id: rectParent)";
         testListeners();
         break;
     case 3:
         use.setAttribute("onclick", "eventHandler(evt, 3)");
         expected[2] = "[EventHandler 3] type: click phase: AT_TARGET target: [object SVGUseElement] (id: use) currentTarget: [object SVGUseElement] (id: use)";
         testListeners();
         break;
     case 4:
         useContainer.onclick = function(evt) { eventHandler(evt, 4) };
         expected[3] = "[EventHandler 4] type: click phase: BUBBLING target: [object SVGUseElement] (id: use) currentTarget: [object SVGGElement] (id: useParent)";
@@ skipping 21 matching lines @@
 // Create defs section
 var defs = document.createElementNS(svgNS, "defs");
 svg.appendChild(defs);
 
 var rectContainer = document.createElementNS(svgNS, "g");
 rectContainer.id = "rectParent";
 defs.appendChild(rectContainer);
 
 var rect = document.createElementNS(svgNS, "rect");
 rect.id = "rect";
-rect.style.fill = "red";
+rect.style.fill = "blue";
 rect.width.baseVal.value = 100;
 rect.height.baseVal.value = 100;
 rectContainer.appendChild(rect);
 
 // Create content section
 var useContainer = document.createElementNS(svgNS, "g");
 useContainer.id = "useParent";
 svg.appendChild(useContainer);
 
 var use = document.createElementNS(svgNS, "use");
 use.id = "use";
 use.href.baseVal = "#rectParent";
 useContainer.appendChild(use);
 
 function repaintTest() {
     nextTest();
 }