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 "components/reading_list/ios/favicon_web_state_dispatcher.h"
+#include "ios/web/public/web_state/web_state_observer.h"
+#include "url/gurl.h"
+
+namespace reading_list {
+
+// Loads URLs and injects JavaScript into a page, extracting the distilled page
+// content.
+class ReadingListDistillerPage : public dom_distiller::DistillerPageIOS {
+ public:
+  explicit ReadingListDistillerPage(
+      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_