Sync the Touch-related interfaces with the two specs

Source/core/dom/Document.idl

Index: Source/core/dom/Document.idl
diff --git a/Source/core/dom/Document.idl b/Source/core/dom/Document.idl
index 40a0d9789ddbcdb0b93760af74c6fc243a6f2798..63064e608eb6e8639b45b522b0e470e8084d808c 100644
--- a/Source/core/dom/Document.idl
+++ b/Source/core/dom/Document.idl
@@ -165,7 +165,7 @@ interface Document : Node {
     [MeasureAs=DocumentExitPointerLock] void exitPointerLock();
 
     // Touch Events
-    // http://www.w3.org/TR/touch-events/#extensions-to-the-document-interface
+    // http://rawgit.com/w3c/touch-events/v1-errata/touchevents.html#extensions-to-the-document-interface
     // FIXME: The arguments should not be optional.
     // FIXME: The webkit-prefixed arguments are not in the spec.

[Rick Byers, 2015/03/06 13:56:55]

If you want, you can remove the webkit prefixes on the argument names here since
they're in the TE extensions note and we're shipping them unprefixed (although
we still aren't shipping Touch.rotationAngle unprefixed, there's no reason not
to anymore).

[philipj_slow, 2015/03/06 15:33:58]

Actually the extension spec doesn't mention these new createTouch arguments,
maybe it should?

     [RuntimeEnabled=Touch] Touch createTouch([Default=Undefined] optional Window window,