Create distiller files for Reading List.

ios/chrome/browser/reading_list/reading_list_distiller_page.h

+// Copyright 2016 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 IOS_CHROME_BROWSER_READING_LIST_READING_LIST_DISTILLER_PAGE_H_
+#define IOS_CHROME_BROWSER_READING_LIST_READING_LIST_DISTILLER_PAGE_H_
+
+#include <memory>
+#include <string>
+
+#include "base/memory/weak_ptr.h"
+#include "components/dom_distiller/ios/distiller_page_ios.h"
+#include "url/gurl.h"
+
+namespace web {
+class BrowserState;
+}
+
+namespace reading_list {
+
+class FaviconWebStateDispatcher;
+
+// An DistillerPageIOS that will retain WebState to allow favicon download and
+// and add a 2 seconds delay between loading and distillation.
+class ReadingListDistillerPage : public dom_distiller::DistillerPageIOS {
+ public:
+  explicit ReadingListDistillerPage(
+      web::BrowserState* browser_state,
+      FaviconWebStateDispatcher* web_state_dispatcher);
+  ~ReadingListDistillerPage() override;
+
+ protected:
+  void DistillPageImpl(const GURL& url, const std::string& script) override;
+  void OnDistillationDone(const GURL& page_url,
+                          const base::Value* value) override;
+  void OnLoadURLDone(
+      web::PageLoadCompletionStatus load_completion_status) override;
+
+ private:
+  void DelayedOnLoadURLDone(
+      web::PageLoadCompletionStatus load_completion_status);
+  FaviconWebStateDispatcher* web_state_dispatcher_;
+  base::WeakPtrFactory<ReadingListDistillerPage> weak_ptr_factory_;
+};
+
+}  // namespace reading_list
+
+#endif  // IOS_CHROME_BROWSER_READING_LIST_READING_LIST_DISTILLER_PAGE_H_