Introduced WebFactory and WebFactoryImpl for constructing web/ classes

third_party/WebKit/Source/web/WebFactoryImpl.h

+// Copyright 2017 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.
+
+#ifndef WebFactoryImpl_h
+#define WebFactoryImpl_h
+
+#include "core/exported/WebFactory.h"
+
+namespace blink {
+
+class WebFactoryImpl : public WebFactory {
+ public:
+  WebFactoryImpl() {}
+  ~WebFactoryImpl() {}
+
+  ChromeClient* CreateChromeClient(WebViewBase*) const override;
+  WebViewBase* CreateWebViewBase(WebViewClient*,
+                                 WebPageVisibilityState) const override;
+};
+
+}  // namespace blink
+
+#endif