Added experimental tilt and tiltDirection to the Touch interface

Source/core/dom/Touch.h

Index: Source/core/dom/Touch.h
diff --git a/Source/core/dom/Touch.h b/Source/core/dom/Touch.h
index 26591abbbeb21371d3bd8a7132b69a733a6a98e7..d3f90daa4721577d6bbe9cc817f0397990a06d81 100644
--- a/Source/core/dom/Touch.h
+++ b/Source/core/dom/Touch.h
@@ -45,10 +45,10 @@ class Touch final : public RefCountedWillBeGarbageCollected<Touch>, public Scrip
 public:
     static PassRefPtrWillBeRawPtr<Touch> create(LocalFrame* frame, EventTarget* target,
         unsigned identifier, const FloatPoint& screenPos, const FloatPoint& pagePos,
-        const FloatSize& radius, float rotationAngle, float force)
+        const FloatSize& radius, float rotationAngle, float force, float tilt, float tiltDirection)
     {
         return adoptRefWillBeNoop(
-            new Touch(frame, target, identifier, screenPos, pagePos, radius, rotationAngle, force));
+            new Touch(frame, target, identifier, screenPos, pagePos, radius, rotationAngle, force, tilt, tiltDirection));
     }
 
     // DOM Touch implementation
@@ -67,6 +67,8 @@ public:
     float webkitRotationAngle() const { return m_rotationAngle; }
     float force() const { return m_force; }
     float webkitForce() const { return m_force; }
+    float tilt() const { return m_tilt; }
+    float tiltDirection() const {return m_tiltDirection; }
 
     // Blink-internal methods
     const LayoutPoint& absoluteLocation() const { return m_absoluteLocation; }
@@ -78,11 +80,11 @@ public:
 private:
     Touch(LocalFrame* frame, EventTarget* target, unsigned identifier,
         const FloatPoint& screenPos, const FloatPoint& pagePos,
-        const FloatSize& radius, float rotationAngle, float force);
+        const FloatSize& radius, float rotationAngle, float force, float tilt, float tiltDirection);
 
     Touch(EventTarget*, unsigned identifier, const FloatPoint& clientPos,
         const FloatPoint& screenPos, const FloatPoint& pagePos,
-        const FloatSize& radius, float rotationAngle, float force, LayoutPoint absoluteLocation);
+        const FloatSize& radius, float rotationAngle, float force, float tilt, float tiltDirection, LayoutPoint absoluteLocation);
 
     RefPtrWillBeMember<EventTarget> m_target;
     unsigned m_identifier;
@@ -96,6 +98,8 @@ private:
     FloatSize m_radius;
     float m_rotationAngle;
     float m_force;
+    float m_tilt;
+    float m_tiltDirection;
     // FIXME(rbyers): Shouldn't we be able to migrate callers to relying on screenPos, pagePos
     // or clientPos? absoluteLocation appears to be the same as pagePos but without browser
     // scale applied.