Skip foreign fetch when the skipServiceWorker flag is set on a request.

third_party/WebKit/Source/core/fetch/CrossOriginAccessControl.cpp

 /*
  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 63 matching lines @@
 }
 
 ResourceRequest createAccessControlPreflightRequest(const ResourceRequest& request, SecurityOrigin* securityOrigin)
 {
     ResourceRequest preflightRequest(request.url());
     updateRequestForAccessControl(preflightRequest, securityOrigin, DoNotAllowStoredCredentials);
     preflightRequest.setHTTPMethod(HTTPNames::OPTIONS);
     preflightRequest.setHTTPHeaderField(HTTPNames::Access_Control_Request_Method, AtomicString(request.httpMethod()));
     preflightRequest.setPriority(request.priority());
     preflightRequest.setRequestContext(request.requestContext());
-    preflightRequest.setSkipServiceWorker(true);
+    preflightRequest.setSkipServiceWorker(WebURLRequest::SkipServiceWorker::All);
 
     if (request.isExternalRequest())
         preflightRequest.setHTTPHeaderField(HTTPNames::Access_Control_Request_External, "true");
 
     const HTTPHeaderMap& requestHeaderFields = request.httpHeaderFields();
 
     if (requestHeaderFields.size() > 0) {
         // Fetch API Spec:
         //   https://fetch.spec.whatwg.org/#cors-preflight-fetch-0
         Vector<String> headers;
@@ skipping 233 matching lines @@
         newRequest.setHTTPOrigin(securityOrigin);
         // If the user didn't request credentials in the first place, update our
         // state so we neither request them nor expect they must be allowed.
         if (options.credentialsRequested == ClientDidNotRequestCredentials)
             options.allowCredentials = DoNotAllowStoredCredentials;
     }
     return true;
 }
 
 } // namespace blink