Introduced WebFactory and WebFactoryImpl for constructing web/ classes

third_party/WebKit/Source/web/WebFactoryImpl.cpp

+// 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.
+
+#include "web/WebFactoryImpl.h"
+#include "web/ChromeClientImpl.h"
+#include "web/WebViewImpl.h"
+
+namespace blink {
+
+ChromeClient* WebFactoryImpl::CreateChromeClient(WebViewBase* view) const {
+  return ChromeClientImpl::Create(view);
+}
+
+WebViewBase* WebFactoryImpl::CreateWebViewBase(
+    WebViewClient* client,
+    WebPageVisibilityState state) const {
+  return WebViewImpl::Create(client, state);
+}
+}