Make Touch.radiusX/Y float and make Touch.webkit* aliases in the IDL

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 864150f06109ccff01eb5cf6379df79066724fe5..8038088082db744476462ebd869c71aad1c6f8c6 100644
--- a/Source/core/dom/Touch.h
+++ b/Source/core/dom/Touch.h
@@ -61,13 +61,10 @@ public:
     double screenY() const { return m_screenPos.y(); }
     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 radiusX() const { return m_radius.width(); }
+    float radiusY() const { return m_radius.height(); }
+    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; }