Remove legacy migration code that coupled history and bookmarks.

chrome/browser/history/expire_history_backend_unittest.cc

 // 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.
 
 #include <algorithm>
 #include <string>
 #include <utility>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
@@ skipping 115 matching lines @@
   typedef std::vector< std::pair<int, HistoryDetails*> >
       NotificationList;
   NotificationList notifications_;
 
  private:
   void SetUp() {
     ASSERT_TRUE(tmp_dir_.CreateUniqueTempDir());
 
     FilePath history_name = path().Append(kHistoryFile);
     main_db_.reset(new HistoryDatabase);
-    if (main_db_->Init(history_name, FilePath()) != sql::INIT_OK)
+    if (main_db_->Init(history_name) != sql::INIT_OK)
       main_db_.reset();
 
     FilePath archived_name = path().Append(kArchivedHistoryFile);
     archived_db_.reset(new ArchivedDatabase);
     if (!archived_db_->Init(archived_name))
       archived_db_.reset();
 
     FilePath thumb_name = path().Append(kThumbnailFile);
     thumb_db_.reset(new ThumbnailDatabase);
     if (thumb_db_->Init(thumb_name, NULL, main_db_.get()) != sql::INIT_OK)
@@ skipping 806 matching lines @@
   main_db_->GetVisitsForURL(url_id, &archived_visits);
   EXPECT_EQ(0U, archived_visits.size());
 }
 
 // TODO(brettw) add some visits with no URL to make sure everything is updated
 // properly. Have the visits also refer to nonexistent FTS rows.
 //
 // Maybe also refer to invalid favicons.
 
 }  // namespace history