Sync the Touch-related interfaces with the two specs

Source/core/dom/Touch.idl

Index: Source/core/dom/Touch.idl
diff --git a/Source/core/dom/Touch.idl b/Source/core/dom/Touch.idl
index d7003b65ea7ebc2f22a2636836a56b98a5fd9089..dd4f87078eda045050726358ec1970c9ffe9c2df 100644
--- a/Source/core/dom/Touch.idl
+++ b/Source/core/dom/Touch.idl
@@ -23,20 +23,29 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+// http://rawgit.com/w3c/touch-events/v1-errata/touchevents.html#touch-interface
+
 [
     WillBeGarbageCollected,
 ] interface Touch {
-    readonly attribute double           clientX;
-    readonly attribute double           clientY;
-    readonly attribute double           screenX;
-    readonly attribute double           screenY;
-    readonly attribute double           pageX;
-    readonly attribute double           pageY;
-    readonly attribute EventTarget      target;
-    readonly attribute unsigned long    identifier;
-    readonly attribute double           radiusX;
-    readonly attribute double           radiusY;
-    readonly attribute float            force;
+    // FIXME: identifier should be long, not unsigned long.
+    readonly attribute unsigned long identifier;
+    readonly attribute EventTarget target;
+    readonly attribute double screenX;
+    readonly attribute double screenY;
+    readonly attribute double clientX;
+    readonly attribute double clientY;
+    readonly attribute double pageX;
+    readonly attribute double pageY;
+
+    // Touch Events Extensions
+    // http://rawgit.com/w3c/touch-events/master/touchevents.html#touch-interface
+    // FIXME: radiusX and radiusY should be float, not double.
+    readonly attribute double radiusX;
+    readonly attribute double radiusY;
+    readonly attribute float force;
+
+    // Non-standard APIs
     [MeasureAs=PrefixedTouchRadiusX] readonly attribute double webkitRadiusX;
     [MeasureAs=PrefixedTouchRadiusY] readonly attribute double webkitRadiusY;
     [MeasureAs=PrefixedTouchRotationAngle] readonly attribute float webkitRotationAngle;