Add the ability to unload the HistoryBackend....

chrome/browser/bookmarks/bookmark_index_unittest.cc

 // Copyright (c) 2009 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.
 
 #include <string>
 #include <vector>
 
 #include "base/message_loop.h"
 #include "base/string_util.h"
 #include "chrome/browser/bookmarks/bookmark_index.h"
@@ skipping 206 matching lines @@
   profile.CreateHistoryService(true);
   profile.BlockUntilHistoryProcessesPendingRequests();
   profile.CreateBookmarkModel(true);
   profile.BlockUntilBookmarkModelLoaded();
 
   BookmarkModel* model = profile.GetBookmarkModel();
 
   HistoryService* const history_service =
       profile.GetHistoryService(Profile::EXPLICIT_ACCESS);
 
-  history::URLDatabase* url_db = history_service->in_memory_database();
+  history::URLDatabase* url_db = history_service->InMemoryDatabase();
 
   struct TestData {
     const GURL url;
     const std::wstring title;
     const int typed_count;
   } data[] = {
     { GURL("http://www.google.com/"),      L"Google",           100 },
     { GURL("http://maps.google.com/"),     L"Google Maps",       40 },
     { GURL("http://docs.google.com/"),     L"Google Docs",       50 },
     { GURL("http://reader.google.com/"),   L"Google Reader",     80 },
@@ skipping 43 matching lines @@
 
   matches.clear();
   // Select top two matches.
   model->GetBookmarksWithTitlesMatching(L"google", 2, &matches);
 
   EXPECT_EQ(2, static_cast<int>(matches.size()));
   EXPECT_EQ(data[0].url, matches[0].node->GetURL());
   EXPECT_EQ(data[3].url, matches[1].node->GetURL());
 }