Added experimental tilt and tiltDirection to the Touch interface

Source/core/dom/Document.idl

 /*
  * Copyright (C) 2006, 2007, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2006, 2007 Samuel Weinig <sam@webkit.org>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 160 matching lines @@
     [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);
+                                             [Default=Undefined] optional unrestricted float webkitForce,
+                                             [Default=Undefined] optional unrestricted float tilt,
+                                             [Default=Undefined] optional unrestricted float tiltDirection);
     [RuntimeEnabled=Touch] TouchList createTouchList(Touch... touches);
 
     // FIXME: The spec doesn't define these event handler attributes.
     [RuntimeEnabled=Touch] attribute EventHandler ontouchstart;
     [RuntimeEnabled=Touch] attribute EventHandler ontouchend;
     [RuntimeEnabled=Touch] attribute EventHandler ontouchmove;
     [RuntimeEnabled=Touch] attribute EventHandler ontouchcancel;
 
     // Custom Elements
     // http://w3c.github.io/webcomponents/spec/custom/#extensions-to-document-interface-to-register
@@ skipping 32 matching lines @@
     attribute EventHandler onsearch;
     [RuntimeEnabled=ExperimentalContentSecurityPolicyFeatures] attribute EventHandler onsecuritypolicyviolation;
     attribute EventHandler onselectionchange;
     attribute EventHandler onselectstart;
     attribute EventHandler onwheel;
 };
 
 Document implements GlobalEventHandlers;
 Document implements ParentNode;
 Document implements NonElementParentNode;