Service Worker: Remove legacy code for resolving register() to a version

content/browser/service_worker/service_worker_context_core.h

Index: content/browser/service_worker/service_worker_context_core.h
diff --git a/content/browser/service_worker/service_worker_context_core.h b/content/browser/service_worker/service_worker_context_core.h
index 83ef2f681799a0ef39772aa0577974a254c794cd..b5178fe99d6c4ebd39bb4b93e0eb3e612a478a27 100644
--- a/content/browser/service_worker/service_worker_context_core.h
+++ b/content/browser/service_worker/service_worker_context_core.h
@@ -59,8 +59,7 @@ class CONTENT_EXPORT ServiceWorkerContextCore
  public:
   typedef base::Callback<void(ServiceWorkerStatusCode status)> StatusCallback;
   typedef base::Callback<void(ServiceWorkerStatusCode status,
-                              int64 registration_id,
-                              int64 version_id)> RegistrationCallback;
+                              int64 registration_id)> RegistrationCallback;
   typedef base::Callback<
       void(ServiceWorkerStatusCode status)> UnregistrationCallback;
   typedef IDMap<ServiceWorkerProviderHost, IDMapOwnPointer> ProviderMap;
@@ -195,8 +194,7 @@ class CONTENT_EXPORT ServiceWorkerContextCore
   void RegistrationComplete(const GURL& pattern,
                             const RegistrationCallback& callback,
                             ServiceWorkerStatusCode status,
-                            ServiceWorkerRegistration* registration,
-                            ServiceWorkerVersion* version);
+                            ServiceWorkerRegistration* registration);
 
   void UnregistrationComplete(const GURL& pattern,
                               const UnregistrationCallback& callback,