Service Workers: Clean up cpplint.py warnings

content/browser/service_worker/service_worker_registration.h

 // Copyright 2013 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.
 
 #ifndef CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_REGISTRATION_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_REGISTRATION_H_
 
 #include "base/basictypes.h"
 #include "base/gtest_prod_util.h"
 #include "base/logging.h"
@@ skipping 18 matching lines @@
 // two pages that are registering the same pattern at the same time
 // have their registrations coalesced rather than overwriting each
 // other.
 //
 // This class also manages the state of the upgrade process, which
 // includes managing which ServiceWorkerVersion is "active" vs "in
 // waiting".
 class CONTENT_EXPORT ServiceWorkerRegistration
     : NON_EXPORTED_BASE(public base::RefCounted<ServiceWorkerRegistration>) {
  public:
-
   class Listener {
    public:
     virtual void OnVersionAttributesChanged(
         ServiceWorkerRegistration* registration,
         ChangedVersionAttributesMask changed_mask,
         const ServiceWorkerRegistrationInfo& info)  = 0;
   };
 
   ServiceWorkerRegistration(const GURL& pattern,
                             const GURL& script_url,
@@ skipping 51 matching lines @@
   scoped_refptr<ServiceWorkerVersion> active_version_;
   scoped_refptr<ServiceWorkerVersion> waiting_version_;
   scoped_refptr<ServiceWorkerVersion> installing_version_;
   ObserverList<Listener> listeners_;
   base::WeakPtr<ServiceWorkerContextCore> context_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerRegistration);
 };
 }  // namespace content
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_REGISTRATION_H_