Remove the unused source_process_id and provider_host arguments to SW unregistration.

content/browser/service_worker/service_worker_context_wrapper.cc

 // 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.
 
 #include "content/browser/service_worker/service_worker_context_wrapper.h"
 
 #include "base/files/file_path.h"
 #include "content/browser/service_worker/service_worker_context_core.h"
 #include "content/browser/service_worker/service_worker_context_observer.h"
 #include "content/browser/service_worker/service_worker_process_manager.h"
@@ skipping 91 matching lines @@
     ServiceWorkerStatusCode status) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   BrowserThread::PostTask(
       BrowserThread::UI,
       FROM_HERE,
       base::Bind(continuation, status == SERVICE_WORKER_OK));
 }
 
 void ServiceWorkerContextWrapper::UnregisterServiceWorker(
     const GURL& pattern,
-    int source_process_id,
     const ResultCallback& continuation) {
   if (!BrowserThread::CurrentlyOn(BrowserThread::IO)) {
     BrowserThread::PostTask(
         BrowserThread::IO,
         FROM_HERE,
         base::Bind(&ServiceWorkerContextWrapper::UnregisterServiceWorker,
                    this,
                    pattern,
-                   source_process_id,
                    continuation));
     return;
   }
 
   context()->UnregisterServiceWorker(
       pattern,
-      source_process_id,
-      NULL /* provider_host */,
       base::Bind(&FinishUnregistrationOnIO, continuation));
 }
 
 void ServiceWorkerContextWrapper::AddObserver(
     ServiceWorkerContextObserver* observer) {
   observer_list_->AddObserver(observer);
 }
 
 void ServiceWorkerContextWrapper::RemoveObserver(
     ServiceWorkerContextObserver* observer) {
   observer_list_->RemoveObserver(observer);
 }
 
 }  // namespace content