Create distiller files for Reading List.

components/reading_list/ios/favicon_web_state_dispatcher.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 COMPONENTS_DOM_DISTILLER_IOS_FAVICON_WEB_STATE_DISPATCHER_H_
-#define COMPONENTS_DOM_DISTILLER_IOS_FAVICON_WEB_STATE_DISPATCHER_H_
+#ifndef COMPONENTS_READING_LIST_IOS_FAVICON_WEB_STATE_DISPATCHER_H_
+#define COMPONENTS_READING_LIST_IOS_FAVICON_WEB_STATE_DISPATCHER_H_
 
 namespace web {
 class WebState;
 }
 
-namespace dom_distiller {
+namespace reading_list {
 
 // Dispatcher for WebState having a Favicon Driver, with BookmarkModel and
-// HistoryService attached, as observer. The Webstates are kept alive between
-// their creation and their return. After a WebState is returned, the dispatcher
-// keeps it alive long enough for it to download the favicons.
+// HistoryService attached, as observer. After a WebState is returned, the
+// dispatcher keeps it alive long enough for it to download the favicons.
 class FaviconWebStateDispatcher {
  public:
   FaviconWebStateDispatcher() {}
   virtual ~FaviconWebStateDispatcher() {}
   // Returns a WebState with a Favicon Driver attached.
-  virtual web::WebState* RequestWebState() = 0;
+  virtual std::unique_ptr<web::WebState> RequestWebState() = 0;
   // Called to return a WebState. The WebState should not be used after being
   // returned.
-  virtual void ReturnWebState(web::WebState* web_state) = 0;
+  virtual void ReturnWebState(std::unique_ptr<web::WebState> web_state) = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(FaviconWebStateDispatcher);
 };
 
-}  // namespace dom_distiller
+}  // namespace reading_list
 
-#endif  // COMPONENTS_DOM_DISTILLER_IOS_FAVICON_WEB_STATE_DISPATCHER_H_
+#endif  // COMPONENTS_READING_LIST_IOS_FAVICON_WEB_STATE_DISPATCHER_H_