[ServiceWorker] Serialize request.referrer to "about:client" when it's client.

Source/modules/serviceworkers/Request.cpp

 // 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.
 
 #include "config.h"
 #include "Request.h"
 
 #include "bindings/core/v8/Dictionary.h"
 #include "core/dom/ExecutionContext.h"
 #include "core/fetch/FetchUtils.h"
@@ skipping 124 matching lines @@
 
 Request* Request::create(ExecutionContext* context, const String& input, ExceptionState& exceptionState)
 {
     return create(context, input, Dictionary(), exceptionState);
 }
 
 Request* Request::create(ExecutionContext* context, const String& input, const Dictionary& init, ExceptionState& exceptionState)
 {
     // "2. Let |request| be |input|'s associated request, if |input| is a
     // Request object, and a new request otherwise."
-    FetchRequestData* request(FetchRequestData::create(context));
+    FetchRequestData* request(FetchRequestData::create());
     // "3. Set |request| to a restricted copy of itself."
     request = request->createRestrictedCopy(context, SecurityOrigin::create(context->url()));
     // "6. If |input| is a string, run these substeps:"
     // "1. Let |parsedURL| be the result of parsing |input| with entry settings
     // object's API base URL."
     KURL parsedURL = context->completeURL(input);
     // "2. If |parsedURL| is failure, throw a TypeError."
     if (!parsedURL.isValid()) {
         exceptionState.throwTypeError("Invalid URL");
         return 0;
@@ skipping 91 matching lines @@
     if (!m_request->url().hasFragmentIdentifier())
         return m_request->url();
     KURL url(m_request->url());
     url.removeFragmentIdentifier();
     return url;
 }
 
 String Request::referrer() const
 {
     // "The referrer attribute's getter must return the empty string if
-    // request's referrer is none, and request's referrer, serialized,
-    // otherwise."
+    // request's referrer is no referrer, "about:client" if request's referrer
+    // is client and request's referrer, serialized, otherwise."
+    if (m_request->referrer().isNoReferrer())
+        return String();
+    if (m_request->referrer().isClient())
+        return String("about:client");
     return m_request->referrer().referrer().referrer;
 }
 
 String Request::mode() const
 {
     // "The mode attribute's getter must return the value corresponding to the
     // first matching statement, switching on request's mode:"
     switch (m_request->mode()) {
     case WebURLRequest::FetchRequestModeSameOrigin:
         return "same-origin";
@@ skipping 61 matching lines @@
 }
 
 void Request::trace(Visitor* visitor)
 {
     Body::trace(visitor);
     visitor->trace(m_request);
     visitor->trace(m_headers);
 }
 
 } // namespace blink