Implement a part of ProcessingInstruction by using PrivateScript

Source/core/xml/WindowXSLT.cpp

+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "config.h"
+#include "core/xml/WindowXSLT.h"
+
+#include "core/dom/Document.h"
+//
+#include "core/dom/Node.h"
+//
+#include "core/frame/LocalDOMWindow.h"
+
+namespace blink {
+
+void WindowXSLT::replaceDocument(LocalDOMWindow& window, String documentSource, String contentType, String encodingName)
+{
+    window.replaceDocument(documentSource, contentType, encodingName);
+}
+
+} // namespace blink