Implement delete methods for the various CannedBrowsingDataHelpers.

chrome/browser/browsing_data/browsing_data_database_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_DATABASE_HELPER_H_
 #define CHROME_BROWSER_BROWSING_DATA_BROWSING_DATA_DATABASE_HELPER_H_
 
 #include <list>
 #include <set>
 #include <string>
@@ skipping 124 matching lines @@
   // Returns the number of currently stored databases.
   size_t GetDatabaseCount() const;
 
   // Returns the current list of web databases.
   const std::set<PendingDatabaseInfo>& GetPendingDatabaseInfo();
 
   // BrowsingDataDatabaseHelper implementation.
   virtual void StartFetching(
       const base::Callback<void(const std::list<DatabaseInfo>&)>& callback)
           OVERRIDE;
+  virtual void DeleteDatabase(const std::string& origin_identifier,
+                              const std::string& name) OVERRIDE;
 
  private:
   virtual ~CannedBrowsingDataDatabaseHelper();
 
   std::set<PendingDatabaseInfo> pending_database_info_;
 
   Profile* profile_;
 
   DISALLOW_COPY_AND_ASSIGN(CannedBrowsingDataDatabaseHelper);
 };
 
 #endif  // CHROME_BROWSER_BROWSING_DATA_BROWSING_DATA_DATABASE_HELPER_H_