Added experimental tilt and tiltDirection to the Touch interface

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 9537778eb9034872cbca02318fd3cce16b675b0a..4c3af574bac504052a600ddd30bd15685d71bdfa 100644
--- a/Source/core/dom/Document.idl
+++ b/Source/core/dom/Document.idl
@@ -191,6 +191,7 @@ interface Document : Node {
                                              [Default=Undefined] optional double webkitRadiusX,
                                              [Default=Undefined] optional double webkitRadiusY,
                                              [Default=Undefined] optional float webkitRotationAngle,
+                                             [Default=Undefined] optional float webkitTilt,

[Rick Byers, 2015/02/04 11:48:55]

New arguments must be last to avoid changing the semantics of any existing code
out there on the web.

[d.pikalov, 2015/02/11 11:17:13]

Done.

                                              [Default=Undefined] optional float webkitForce);
     [RuntimeEnabled=Touch] TouchList createTouchList(Touch... touches);