Support redirects by regular expression in declarative WebRequest API

chrome/test/data/extensions/api_test/webrequest/test_declarative.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;
 var RedirectRequest = chrome.declarativeWebRequest.RedirectRequest;
 var RedirectToTransparentImage =
     chrome.declarativeWebRequest.RedirectToTransparentImage;
 var RedirectToEmptyDocument =
     chrome.declarativeWebRequest.RedirectToEmptyDocument;
 var SetRequestHeader =
     chrome.declarativeWebRequest.SetRequestHeader;
 var RemoveRequestHeader =
     chrome.declarativeWebRequest.RemoveRequestHeader;
 var RemoveResponseHeader =
     chrome.declarativeWebRequest.RemoveResponseHeader;
 var IgnoreRules =
     chrome.declarativeWebRequest.IgnoreRules;
 
 // Constants as functions, not to be called until after runTests.
 function getURLEchoUserAgent() {
   return getServerURL('echoheader?User-Agent');
 }
 
 function getURLHttpSimple() {
   return getServerURL("files/extensions/api_test/webrequest/simpleLoad/a.html");
 }
 
+function getURLHttpSimpleB() {
+  return getServerURL("files/extensions/api_test/webrequest/simpleLoad/b.html");
+}
+
 function getURLHttpComplex() {
   return getServerURL(
       "files/extensions/api_test/webrequest/complexLoad/a.html");
 }
 
 function getURLHttpRedirectTest() {
   return getServerURL(
       "files/extensions/api_test/webrequest/declarative/a.html");
 }
 
@@ skipping 136 matching lines @@
              new RequestMatcher({url: {pathSuffix: "image.png"}})],
          actions: [new RedirectToTransparentImage()]},
         {conditions: [
              new RequestMatcher({url: {pathSuffix: "frame.html"}})],
          actions: [new RedirectToEmptyDocument()]},
       ],
       function() {navigateAndWait(getURLHttpRedirectTest());}
     );
   },
 
+  function testRedirectByRegEx() {
+    ignoreUnexpected = true;
+    expect(
+      [
+        { label: "onCompleted",
+          event: "onCompleted",
+          details: {
+            ip: "127.0.0.1",
+            url: getURLHttpSimpleB(),
+            fromCache: false,
+            statusCode: 200,
+            statusLine: "HTTP/1.0 200 OK",
+          }
+        },
+      ],
+      [ ["onCompleted"] ]);
+
+    onRequest.addRules(
+      [ {conditions: [new RequestMatcher({url: {pathSuffix: ".html"}})],
+         actions: [
+             new RedirectByRegEx({from: "^(.*)/a.html$", to: "$1/b.html"})]}
+      ],
+      function() {navigateAndWait(getURLHttpSimple());}
+    );
+  },
+
   function testSetRequestHeader() {
     ignoreUnexpected = true;
     expect();  // Used for initialization.
     onRequest.addRules(
       [{conditions: [new RequestMatcher()],
         actions: [new SetRequestHeader({name: "User-Agent", value: "FoobarUA"})]
        }],
       function() {
         // Check the page content for our modified User-Agent string.
         navigateAndWait(getURLEchoUserAgent(), function() {
@@ skipping 96 matching lines @@
          actions: [new CancelRequest()]},
         {conditions: [new RequestMatcher({url: {pathContains: "a.html"}})],
          actions: [new IgnoreRules({lowerPriorityThan: 200})],
          priority: 200}
       ],
       function() {navigateAndWait(getURLHttpSimple());}
     );
   },
 
   ]);