Start sending auxclick instead of click for non-primary buttons

third_party/WebKit/LayoutTests/fast/events/script-tests/mouse-click-events.js

 description("This tests what mouse events we send.");
 
 var div = document.createElement("div");
 div.style.width = "100px";
 div.style.height = "100px";
 div.style.backgroundColor = "blue";
 
 var eventLog = "";
 
 function appendEventLog() {
     if (window.eventSender) {
         eventLog += event.type + "(" + event.button + ") ";
     } else {
         debug(event.type + "(" + event.button + ")");
     }
 }
 
 function clearEventLog() {
     eventLog = "";
 }
 
+div.addEventListener("auxclick", appendEventLog, false);
 div.addEventListener("click", appendEventLog, false);
 div.addEventListener("dblclick", appendEventLog, false);
 div.addEventListener("mousedown", appendEventLog, false);
 div.addEventListener("mouseup", appendEventLog, false);
 document.body.insertBefore(div, document.body.firstChild);
 
 if (window.eventSender)
     eventSender.mouseMoveTo(10, 10);
 
 function sendEvents(button) {
@@ skipping 10 matching lines @@
 
 function testEvents(description, button, expectedString) {
     debug(description);
     sendEvents(button);
     shouldBeEqualToString("eventLog", expectedString);
     clearEventLog();
 }
 
 if (window.eventSender) {
     testEvents("Left Mouse Button", 0, "mousedown(0) mouseup(0) click(0) mousedown(0) mouseup(0) click(0) dblclick(0) ");
-    testEvents("Middle Mouse Button", 1, "mousedown(1) mouseup(1) click(1) mousedown(1) mouseup(1) click(1) dblclick(1) ");
-    testEvents("Right Mouse Button", 2, "mousedown(2) mouseup(2) mousedown(2) mouseup(2) ");
+    testEvents("Middle Mouse Button", 1, "mousedown(1) mouseup(1) auxclick(1) mousedown(1) mouseup(1) auxclick(1) ");
+    testEvents("Right Mouse Button", 2, "mousedown(2) mouseup(2) auxclick(2) mousedown(2) mouseup(2) auxclick(2) ");
 }