Cleanup extension permissions module.

chrome/browser/extensions/extension_settings_frontend.cc

 // Copyright (c) 2011 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/extension_settings_frontend.h"
 
 #include "base/bind.h"
 #include "base/file_path.h"
 #include "chrome/browser/extensions/extension_event_names.h"
 #include "chrome/browser/extensions/extension_event_router.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/extension_settings_backend.h"
 #include "chrome/browser/profiles/profile.h"
+#include "chrome/common/chrome_notification_types.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/notification_service.h"
 
 using content::BrowserThread;
 
 namespace {
 
 struct Backends {
   Backends(
       const FilePath& profile_path,
@@ skipping 271 matching lines @@
   observers_->AddObserver(observer->get());
 }
 
 void ExtensionSettingsFrontend::ClearDefaultObserver(
     scoped_ptr<DefaultObserver>* observer) {
   if (observer->get()) {
     observers_->RemoveObserver(observer->get());
     observer->reset();
   }
 }