Support for distilling prior pages in an article.

components/dom_distiller/core/page_distiller.h

 // Copyright 2014 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_CORE_PAGE_DISTILLER_H_
 #define COMPONENTS_DOM_DISTILLER_CORE_PAGE_DISTILLER_H_
 
 #include <string>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/values.h"
 #include "components/dom_distiller/core/distiller_page.h"
 #include "url/gurl.h"
 
 namespace dom_distiller {
 
 class DistillerImpl;
 
 struct DistilledPageInfo {
   std::string title;
   std::string html;
   std::string next_page_url;
+  std::string prev_page_url;
   std::vector<std::string> image_urls;
   DistilledPageInfo();
   ~DistilledPageInfo();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(DistilledPageInfo);
 };
 
 // Distills a single page of an article.
 class PageDistiller : public DistillerPage::Delegate {
@@ skipping 26 matching lines @@
 
   scoped_ptr<DistillerPage> distiller_page_;
   PageDistillerCallback page_distiller_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(PageDistiller);
 };
 
 }  // namespace dom_distiller
 
 #endif  // COMPONENTS_DOM_DISTILLER_CORE_PAGE_DISTILLER_H_