Cleanup: Remove unneeded chrome/common/pref_names.h includes.

chrome/browser/autocomplete/shortcuts_backend_factory.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 "chrome/browser/autocomplete/shortcuts_backend_factory.h"
 
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/autocomplete/shortcuts_backend.h"
 #include "chrome/browser/profiles/profile.h"
-#include "chrome/common/pref_names.h"
 #include "components/keyed_service/content/browser_context_dependency_manager.h"
 
 // static
 scoped_refptr<ShortcutsBackend> ShortcutsBackendFactory::GetForProfile(
     Profile* profile) {
   return static_cast<ShortcutsBackend*>(
       GetInstance()->GetServiceForBrowserContext(profile, true).get());
 }
 
 // static
@@ skipping 44 matching lines @@
   scoped_refptr<ShortcutsBackend> backend(
       new ShortcutsBackend(static_cast<Profile*>(profile), false));
   if (backend->Init())
     return backend;
   return NULL;
 }
 
 bool ShortcutsBackendFactory::ServiceIsNULLWhileTesting() const {
   return true;
 }