Add support for KeyboardEvent.location attribute

LayoutTests/fast/events/keydown-leftright-keys.html

Index: LayoutTests/fast/events/keydown-leftright-keys.html
diff --git a/LayoutTests/fast/events/keydown-leftright-keys.html b/LayoutTests/fast/events/keydown-leftright-keys.html
index e303543f0c188bf323345cc70ed013a06282b37f..0bb3680a0985def0e65c8fce60fa92d600ae9fd0 100644
--- a/LayoutTests/fast/events/keydown-leftright-keys.html
+++ b/LayoutTests/fast/events/keydown-leftright-keys.html
@@ -26,7 +26,7 @@ function recordKeyEvent(ev) {
               'shiftKey=' + ev.shiftKey + ',' +
               'altKey=' + ev.altKey + ',' +
               'metaKey=' + ev.metaKey + ',' +
-              'location=' + ev.keyLocation);
+              'location=' + ev.location);
     }
 }
 
@@ -34,7 +34,7 @@ function testKeyEventWithLocation(evString, expectedKeyCode, expectedLocation) {
     eventSender.keyDown(evString, []);
     shouldBe("lastKeyboardEvent.type", '"keydown"');
     shouldEvaluateTo("lastKeyboardEvent.keyCode", expectedKeyCode);
-    shouldEvaluateTo("lastKeyboardEvent.keyLocation", expectedLocation);
+    shouldEvaluateTo("lastKeyboardEvent.location", expectedLocation);
 }
 
 var textarea = document.createElement("textarea");