Measure usage of Document.createTouch()

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 a2e6bf6add41146f5a61bff410b39d3117f9cc54..29c27b6c1168b9a9b6e61d5cc3a30a84a033429a 100644
--- a/Source/core/dom/Document.idl
+++ b/Source/core/dom/Document.idl
@@ -163,18 +163,17 @@ interface Document : Node {
     // Touch Events
     // 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.
-    [RuntimeEnabled=Touch] Touch createTouch([Default=Undefined] optional Window window,
-                                             [Default=Undefined] optional EventTarget target,
-                                             [Default=Undefined] optional long identifier,
-                                             [Default=Undefined] optional unrestricted double pageX,
-                                             [Default=Undefined] optional unrestricted double pageY,
-                                             [Default=Undefined] optional unrestricted double screenX,
-                                             [Default=Undefined] optional unrestricted double screenY,
-                                             [Default=Undefined] optional unrestricted double webkitRadiusX,
-                                             [Default=Undefined] optional unrestricted double webkitRadiusY,
-                                             [Default=Undefined] optional unrestricted float webkitRotationAngle,
-                                             [Default=Undefined] optional unrestricted float webkitForce);
+    [RuntimeEnabled=Touch, Measure] Touch createTouch([Default=Undefined] optional Window window,
+                                                      [Default=Undefined] optional EventTarget target,
+                                                      [Default=Undefined] optional long identifier,
+                                                      [Default=Undefined] optional unrestricted double pageX,
+                                                      [Default=Undefined] optional unrestricted double pageY,
+                                                      [Default=Undefined] optional unrestricted double screenX,
+                                                      [Default=Undefined] optional unrestricted double screenY,
+                                                      [Default=Undefined] optional unrestricted double radiusX,
+                                                      [Default=Undefined] optional unrestricted double radiusY,
+                                                      [Default=Undefined] optional unrestricted float rotationAngle,
+                                                      [Default=Undefined] optional unrestricted float force);
     [RuntimeEnabled=Touch] TouchList createTouchList(Touch... touches);
 
     // FIXME: The spec doesn't define these event handler attributes.