Get rid of custom code for Document::createTouchList()

Source/core/dom/TouchList.h

Index: Source/core/dom/TouchList.h
diff --git a/Source/core/dom/TouchList.h b/Source/core/dom/TouchList.h
index 74a712cd0a2fa6af8c08458909d6a268c6a19d15..6d5f2bf2c9ce172f90196770ffe262061eb0a618 100644
--- a/Source/core/dom/TouchList.h
+++ b/Source/core/dom/TouchList.h
@@ -40,6 +40,11 @@ public:
         return adoptRef(new TouchList);
     }
 
+    static PassRefPtr<TouchList> create(Vector<RefPtr<Touch> >& touches)
+    {
+        return adoptRef(new TouchList(touches));
+    }
+
     unsigned length() const { return m_values.size(); }
 
     Touch* item(unsigned);
@@ -53,6 +58,12 @@ private:
         ScriptWrappable::init(this);
     }
 
+    TouchList(Vector<RefPtr<Touch> >& touches)
+    {
+        m_values.swap(touches);
+        ScriptWrappable::init(this);
+    }
+
     Vector<RefPtr<Touch> > m_values;
 };