Add support for KeyboardEvent.location attribute

LayoutTests/fast/events/arrow-keys-on-body.html

Index: LayoutTests/fast/events/arrow-keys-on-body.html
diff --git a/LayoutTests/fast/events/arrow-keys-on-body.html b/LayoutTests/fast/events/arrow-keys-on-body.html
index 980f5f8eb6d3fa6762f20183375f3eef2a86d7b8..dab61a6e57e93378f20b116bcafbcc63e3134c37 100644
--- a/LayoutTests/fast/events/arrow-keys-on-body.html
+++ b/LayoutTests/fast/events/arrow-keys-on-body.html
@@ -41,7 +41,7 @@ function eventInfo(event, where) {
             + " - " + event.type
             + ' - ' + [event.ctrlKey, event.altKey, event.shiftKey, event.metaKey]
             + ' - ' + event.keyIdentifier
-            + ' - ' + (event.keyLocation === undefined ? "undefined" : locationName(event.keyLocation))
+            + ' - ' + (event.location === undefined ? "undefined" : locationName(event.location))
             + ' - ' + event.keyCode
             + ' - ' + event.charCode;
 
@@ -51,7 +51,7 @@ function eventInfo(event, where) {
 }
 log("target - type - " + ["ctrlKey", "altKey", "shiftKey", "metaKey"]
         + ' - ' + "keyIdentifier"
-        + ' - ' + "keyLocation"
+        + ' - ' + "location"
         + ' - ' + "keyCode"
         + ' - ' + "charCode");