Cleanup: Remove unneeded includes of pref_names.h

chrome/browser/background_application_list_model.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/background_application_list_model.h"
 
 #include <algorithm>
 #include <set>
 
 #include "app/l10n_util_collator.h"
 #include "base/stl_util-inl.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/app/chrome_command_ids.h"
 #include "chrome/browser/background_mode_manager.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/extensions/extension_prefs.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/image_loading_tracker.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_resource.h"
 #include "chrome/common/notification_details.h"
 #include "chrome/common/notification_source.h"
-#include "chrome/common/pref_names.h"
 
 class ExtensionNameComparator {
  public:
   explicit ExtensionNameComparator(icu::Collator* collator);
   bool operator()(const Extension* x, const Extension* y);
 
  private:
   icu::Collator* collator_;
 };
 
@@ skipping 272 matching lines @@
          (*old_cursor)->name() == (*new_cursor)->name() &&
          (*old_cursor)->id() == (*new_cursor)->id()) {
     ++old_cursor;
     ++new_cursor;
   }
   if (old_cursor != extensions_.end() || new_cursor != extensions.end()) {
     extensions_ = extensions;
     FOR_EACH_OBSERVER(Observer, observers_, OnApplicationListChanged());
   }
 }