Expire favicon bitmaps when merging from sync and clearing browser history

components/history/core/browser/thumbnail_database.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 COMPONENTS_HISTORY_CORE_BROWSER_THUMBNAIL_DATABASE_H_
 #define COMPONENTS_HISTORY_CORE_BROWSER_THUMBNAIL_DATABASE_H_
 
 #include <vector>
 
 #include "base/gtest_prod_util.h"
@@ skipping 214 matching lines @@
   bool InitIconMappingEnumerator(favicon_base::IconType type,
                                  IconMappingEnumerator* enumerator);
 
   // Remove all data except that associated with the passed page urls.
   // Returns false in case of failure.  A nested transaction is used,
   // so failure causes any outer transaction to be rolled back.
   bool RetainDataForPageUrls(const std::vector<GURL>& urls_to_keep);
 
  private:
   FRIEND_TEST_ALL_PREFIXES(ThumbnailDatabaseTest, RetainDataForPageUrls);
+  FRIEND_TEST_ALL_PREFIXES(ThumbnailDatabaseTest,
+                           RetainDataForPageUrlsExpiresRetainedFavicons);
   FRIEND_TEST_ALL_PREFIXES(ThumbnailDatabaseTest, Version3);
   FRIEND_TEST_ALL_PREFIXES(ThumbnailDatabaseTest, Version4);
   FRIEND_TEST_ALL_PREFIXES(ThumbnailDatabaseTest, Version5);
   FRIEND_TEST_ALL_PREFIXES(ThumbnailDatabaseTest, Version6);
   FRIEND_TEST_ALL_PREFIXES(ThumbnailDatabaseTest, Version7);
   FRIEND_TEST_ALL_PREFIXES(ThumbnailDatabaseTest, Version8);
   FRIEND_TEST_ALL_PREFIXES(ThumbnailDatabaseTest, WildSchema);
 
   // Open database on a given filename. If the file does not exist,
   // it is created.
@@ skipping 24 matching lines @@
 
   sql::Connection db_;
   sql::MetaTable meta_table_;
 
   HistoryClient* history_client_;
 };
 
 }  // namespace history
 
 #endif  // COMPONENTS_HISTORY_CORE_BROWSER_THUMBNAIL_DATABASE_H_