Remove Clone() from CannedBrowsingData*Helper classes

chrome/browser/browsing_data/browsing_data_file_system_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_FILE_SYSTEM_HELPER_H_
 #define CHROME_BROWSER_BROWSING_DATA_BROWSING_DATA_FILE_SYSTEM_HELPER_H_
 
 #include <list>
 #include <map>
 #include <string>
@@ skipping 79 matching lines @@
 // An implementation of the BrowsingDataFileSystemHelper interface that can
 // be manually populated with data, rather than fetching data from the file
 // systems created in a particular Profile.
 class CannedBrowsingDataFileSystemHelper
     : public BrowsingDataFileSystemHelper {
  public:
   // |profile| is unused in this canned implementation, but it's the interface
   // we're writing to, so we'll accept it, but not store it.
   explicit CannedBrowsingDataFileSystemHelper(Profile* profile);
 
-  // Creates a copy of the file system helper. StartFetching can only respond
-  // to one client at a time; we need to be able to act on multiple parallel
-  // requests in certain situations (see CookiesTreeModel and its clients). For
-  // these cases, simply clone the object and fire off another fetching process.
-  //
-  // Clone() is safe to call while StartFetching() is running. Clients of the
-  // newly created object must themselves execute StartFetching(), however: the
-  // copy will not have a pending fetch.
-  CannedBrowsingDataFileSystemHelper* Clone();
-
   // Manually adds a filesystem to the set of canned file systems that this
   // helper returns via StartFetching. If an origin contains both a temporary
   // and a persistent filesystem, AddFileSystem must be called twice (once for
   // each file system type).
   void AddFileSystem(const GURL& origin,
                      storage::FileSystemType type,
                      int64 size);
 
   // Clear this helper's list of canned filesystems.
   void Reset();
@@ skipping 13 matching lines @@
   virtual void StartFetching(const base::Callback<
       void(const std::list<FileSystemInfo>&)>& callback) OVERRIDE;
 
   // Note that this doesn't actually have an implementation for this canned
   // class. It hasn't been necessary for anything that uses the canned
   // implementation, as the canned class is only used in tests, or in read-only
   // contexts (like the non-modal cookie dialog).
   virtual void DeleteFileSystemOrigin(const GURL& origin) OVERRIDE {}
 
  private:
-  // Used by Clone() to create an object without a Profile
-  CannedBrowsingDataFileSystemHelper();
   virtual ~CannedBrowsingDataFileSystemHelper();
 
   // Holds the current list of filesystems returned to the client.
   std::list<FileSystemInfo> file_system_info_;
 
   // The callback passed in at the beginning of the StartFetching workflow so
   // that it can be triggered via NotifyOnUIThread.
   base::Callback<void(const std::list<FileSystemInfo>&)> completion_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(CannedBrowsingDataFileSystemHelper);
 };
 
 #endif  // CHROME_BROWSER_BROWSING_DATA_BROWSING_DATA_FILE_SYSTEM_HELPER_H_