Add fake headers to URLRequestRedirectJobs.

chrome/test/data/extensions/api_test/webrequest/test_declarative1.js

 // Copyright (c) 2012 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.
 
 var onRequest = chrome.declarativeWebRequest.onRequest;
 var AddResponseHeader =
     chrome.declarativeWebRequest.AddResponseHeader;
 var RequestMatcher = chrome.declarativeWebRequest.RequestMatcher;
 var CancelRequest = chrome.declarativeWebRequest.CancelRequest;
 var RedirectByRegEx = chrome.declarativeWebRequest.RedirectByRegEx;
@@ skipping 292 matching lines @@
             type: "main_frame",
             url: getURLHttpComplex(),
             frameUrl: getURLHttpComplex()
           },
         },
         { label: "onBeforeRedirect",
           event: "onBeforeRedirect",
           details: {
             url: getURLHttpComplex(),
             redirectUrl: getURLHttpSimple(),
-            statusLine: "",
-            statusCode: -1,
             fromCache: false,
+            statusLine: "HTTP/1.1 307 Internal Redirect",
+            statusCode: 307,
           }
         },
         { label: "onBeforeRequest-b",
           event: "onBeforeRequest",
           details: {
             type: "main_frame",
             url: getURLHttpSimple(),
             frameUrl: getURLHttpSimple(),
           },
         },
@@ skipping 38 matching lines @@
         // for data:// URLs.
         { label: "onBeforeRedirect-1",
           event: "onBeforeRedirect",
           details: {
             url: getServerURL(
                 "extensions/api_test/webrequest/declarative/image.png"),
             redirectUrl: "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEA" +
                 "AAABCAYAAAAfFcSJAAAACklEQVR4nGMAAQAABQABDQottAAAAABJRU5ErkJ" +
                 "ggg==",
             fromCache: false,
-            statusCode: -1,
-            statusLine: "",
+            statusLine: "HTTP/1.1 307 Internal Redirect",
+            statusCode: 307,
             type: "image",
           }
         },
         { label: "onBeforeRedirect-2",
           event: "onBeforeRedirect",
           details: {
             frameId: 1,
             parentFrameId: 0,
             url: getServerURL(
                 "extensions/api_test/webrequest/declarative/frame.html"),
             redirectUrl: "data:text/html,",
             fromCache: false,
-            statusCode: -1,
-            statusLine: "",
+            statusLine: "HTTP/1.1 307 Internal Redirect",
+            statusCode: 307,
             type: "sub_frame",
           }
         },
       ],
       [ ["onCompleted"], ["onBeforeRedirect-1"], ["onBeforeRedirect-2"] ]);
 
     onRequest.addRules(
       [ {conditions: [
              new RequestMatcher({url: {pathSuffix: "image.png"}})],
          actions: [new RedirectToTransparentImage()]},
@@ skipping 108 matching lines @@
                  'urlMatches': 'simple[A-Z].*a\.html$',
                  'schemes': ["http"]
              },
            })],
          'actions': [new CancelRequest()]}
       ],
       function() {navigateAndWait(getURLHttpSimple());}
     );
   },
   ]);