Use request initiator to check for cross origin requests.

content/browser/service_worker/service_worker_url_request_job.h

 // Copyright 2014 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_URL_REQUEST_JOB_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_URL_REQUEST_JOB_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 74 matching lines @@
 
     // Called after dispatching the fetch event to determine if processing of
     // the request should still continue, or if processing should be aborted.
     // When false is returned, this sets |*result| to an appropriate error.
     virtual bool RequestStillValid(
         ServiceWorkerMetrics::URLRequestJobResult* result);
 
     // Called to signal that loading failed, and that the resource being loaded
     // was a main resource.
     virtual void MainResourceLoadFailed() {}
-
-    // Returns the origin of the page/context which initiated this request.
-    virtual GURL GetRequestingOrigin() = 0;
   };
 
   ServiceWorkerURLRequestJob(
       net::URLRequest* request,
       net::NetworkDelegate* network_delegate,
       const std::string& client_id,
       base::WeakPtr<storage::BlobStorageContext> blob_storage_context,
       const ResourceContext* resource_context,
       FetchRequestMode request_mode,
       FetchCredentialsMode credentials_mode,
@@ skipping 168 matching lines @@
   bool did_record_result_ = false;
 
   base::WeakPtrFactory<ServiceWorkerURLRequestJob> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerURLRequestJob);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_URL_REQUEST_JOB_H_