Remove the webkit prefix from idl properties and interfaces.

sky/engine/core/dom/Touch.h

Index: sky/engine/core/dom/Touch.h
diff --git a/sky/engine/core/dom/Touch.h b/sky/engine/core/dom/Touch.h
index de4a042ebfc0f9a4fdcc0f4d5322f3dc8dcaf4dc..e4d1b82cfee85fc8f83aded683a6ddd6be46aa67 100644
--- a/sky/engine/core/dom/Touch.h
+++ b/sky/engine/core/dom/Touch.h
@@ -61,12 +61,9 @@ public:
     double pageX() const { return m_pagePos.x(); }
     double pageY() const { return m_pagePos.y(); }
     double radiusX() const { return m_radius.width(); }
-    double webkitRadiusX() const { return m_radius.width(); }
     double radiusY() const { return m_radius.height(); }
-    double webkitRadiusY() const { return m_radius.height(); }
-    float webkitRotationAngle() const { return m_rotationAngle; }
+    float rotationAngle() const { return m_rotationAngle; }
     float force() const { return m_force; }
-    float webkitForce() const { return m_force; }
 
     // Blink-internal methods
     const LayoutPoint& absoluteLocation() const { return m_absoluteLocation; }