Remove Clone() from CannedBrowsingData*Helper classes

chrome/browser/browsing_data/browsing_data_cookie_helper.h

 // Copyright (c) 2012 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_BROWSING_DATA_BROWSING_DATA_COOKIE_HELPER_H_
 #define CHROME_BROWSER_BROWSING_DATA_BROWSING_DATA_COOKIE_HELPER_H_
 
 #include <map>
 #include <string>
 
@@ skipping 78 matching lines @@
 // 5.3). Cookies with same tuple (cookie-name, cookie-domain, cookie-path,
 // host-only-flag) as cookie that are already stored, will replace the stored
 // cookies.
 class CannedBrowsingDataCookieHelper : public BrowsingDataCookieHelper {
  public:
   typedef std::map<GURL, canonical_cookie::CookieHashSet*> OriginCookieSetMap;
 
   explicit CannedBrowsingDataCookieHelper(
       net::URLRequestContextGetter* request_context);
 
-  // Return a copy of the cookie helper. Only one consumer can use the
-  // StartFetching method at a time, so we need to create a copy of the helper
-  // everytime we instantiate a cookies tree model for it.
-  CannedBrowsingDataCookieHelper* Clone();
-
   // Adds the cookies from |cookie_list|. Current cookies that have the same
   // cookie name, cookie domain, cookie path, host-only-flag tuple as passed
   // cookies are replaced by the passed cookies.
   void AddReadCookies(const GURL& frame_url,
                       const GURL& request_url,
                       const net::CookieList& cookie_list);
 
   // Adds a CanonicalCookie that is created from the passed |cookie_line|
   // (called set-cookie-string in RFC 6225). The |cookie_line| is parsed,
   // normalized and validated. Invalid |cookie_line|s are ignored. The logic
@@ skipping 45 matching lines @@
   void AddCookie(const GURL& frame_url,
                  const net::CanonicalCookie& cookie);
 
   // Map that contains the cookie sets for all frame origins.
   OriginCookieSetMap origin_cookie_set_map_;
 
   DISALLOW_COPY_AND_ASSIGN(CannedBrowsingDataCookieHelper);
 };
 
 #endif  // CHROME_BROWSER_BROWSING_DATA_BROWSING_DATA_COOKIE_HELPER_H_