Cleanup: Remove unneeded includes of chrome_switches.h.

chrome/browser/history/history_backend.cc

 // Copyright (c) 2010 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 "chrome/browser/history/history_backend.h"
 
+#include <list>
+#include <map>
 #include <set>
+#include <vector>
 
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/file_util.h"
 #include "base/metrics/histogram.h"
 #include "base/message_loop.h"
 #include "base/scoped_ptr.h"
 #include "base/scoped_vector.h"
 #include "base/string_util.h"
 #include "base/time.h"
 #include "chrome/browser/autocomplete/history_url_provider.h"
 #include "chrome/browser/bookmarks/bookmark_service.h"
 #include "chrome/browser/history/download_create_info.h"
 #include "chrome/browser/history/history_notifications.h"
 #include "chrome/browser/history/history_publisher.h"
 #include "chrome/browser/history/in_memory_history_backend.h"
 #include "chrome/browser/history/page_usage_data.h"
 #include "chrome/browser/history/top_sites.h"
 #include "chrome/common/chrome_constants.h"
-#include "chrome/common/chrome_switches.h"
 #include "chrome/common/notification_type.h"
 #include "chrome/common/url_constants.h"
 #include "googleurl/src/gurl.h"
 #include "grit/chromium_strings.h"
 #include "grit/generated_resources.h"
 #include "net/base/registry_controlled_domain.h"
 
 using base::Time;
 using base::TimeDelta;
 using base::TimeTicks;
@@ skipping 2144 matching lines @@
   return true;
 }
 
 BookmarkService* HistoryBackend::GetBookmarkService() {
   if (bookmark_service_)
     bookmark_service_->BlockTillLoaded();
   return bookmark_service_;
 }
 
 }  // namespace history