[Android Downloads] Long-press menu item "Download Link" should delegate job to OfflinePages backen…

chrome/browser/android/offline_pages/offline_page_utils.h

 // Copyright 2015 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 CHROME_BROWSER_ANDROID_OFFLINE_PAGES_OFFLINE_PAGE_UTILS_H_
 #define CHROME_BROWSER_ANDROID_OFFLINE_PAGES_OFFLINE_PAGE_UTILS_H_
 
 #include <stdint.h>
 
 #include "base/callback.h"
@@ skipping 70 matching lines @@
   // indicates whether requests exist, while second is a helper value to report
   // UMA, indicating the time the latest existing request with such parameters
   // was created.
   static void CheckExistenceOfRequestsWithURL(
       content::BrowserContext* browser_context,
       const std::string name_space,
       const GURL& url,
       const PagesExistCallback& callback);
 
   static bool EqualsIgnoringFragment(const GURL& lhs, const GURL& rhs);
+
+  static void StartOfflinePageDownload(content::BrowserContext* context,
+                                       const GURL& url);
 };
 
 }  // namespace offline_pages
 
 #endif  // CHROME_BROWSER_ANDROID_OFFLINE_PAGES_OFFLINE_PAGE_UTILS_H_