Move remaining non-test, non-Chrome-specific Prefs code to base/prefs/.

chrome/browser/extensions/api/preference/preference_helpers.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/extensions/api/preference/preference_helpers.h"
 
 #include "base/json/json_writer.h"
+#include "base/prefs/pref_service.h"
 #include "base/values.h"
 #include "chrome/browser/extensions/event_router.h"
 #include "chrome/browser/extensions/extension_prefs.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/extension_system.h"
-#include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
 
 namespace extensions {
 namespace preference_helpers {
 
 namespace {
 
 const char kIncognitoPersistent[] = "incognito_persistent";
 const char kIncognitoSessionOnly[] = "incognito_session_only";
 const char kRegular[] = "regular";
@@ skipping 106 matching lines @@
       scoped_ptr<ListValue> args_copy(args->DeepCopy());
       scoped_ptr<Event> event(new Event(event_name, args_copy.Pass()));
       event->restrict_to_profile = restrict_to_profile;
       router->DispatchEventToExtension(extension_id, event.Pass());
     }
   }
 }
 
 }  // namespace preference_helpers
 }  // namespace extensions