Improved extension activity logging for the chrome.webRequest API.

chrome/test/data/extensions/activity_log/options.js

 // Copyright (c) 2013 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.
 
 /**
   * Every test needs:
   *   - a button in options.html
   *   - a function that runs the test & calls setCompleted when done
   *   - a listener registered in setupEvents
 **/
@@ skipping 127 matching lines @@
   );
   window.open('http://www.google.cn');
 }
 
 // Modifies the headers sent and received in an HTTP request using the
 // webRequest API.
 function doWebRequestModifications() {
   // Install a webRequest handler that will add an HTTP header to the outgoing
   // request for the main page.
   function doModifyHeaders(details) {
+    var response = {};
+
     var headers = details.requestHeaders;
     if (headers === undefined) {
       headers = [];
     }
     headers.push({'name': 'X-Test-Activity-Log-Send',
                   'value': 'Present'});
-    return {'requestHeaders': headers};
+    response['requestHeaders'] = headers;
+
+    headers = details.responseHeaders;
+    if (headers === undefined) {
+      headers = [];
+    }
+    headers = headers.filter(
+        function(x) {return x["name"] != "Cache-Control"});
+    headers.push({'name': 'X-Test-Response-Header',
+                  'value': 'Inserted'});
+    headers.push({'name': 'Set-Cookie',
+                  'value': 'ActivityLog=InsertedCookie'});
+    response['responseHeaders'] = headers;
+
+    return response;
   }
   chrome.webRequest.onBeforeSendHeaders.addListener(
       doModifyHeaders,
       {'urls': ['http://*/*'], 'types': ['main_frame']},
       ['blocking', 'requestHeaders']);
+  chrome.webRequest.onHeadersReceived.addListener(
+      doModifyHeaders,
+      {'urls': ['http://*/*'], 'types': ['main_frame']},
+      ['blocking', 'responseHeaders']);
 
   // Open a tab, then close it when it has finished loading--this should give
   // the webRequest handler a chance to run.
   chrome.tabs.onUpdated.addListener(
     function closeTab(tabId, changeInfo, tab) {
       if (changeInfo['status'] === "complete" &&
           tab.url.match(/google\.co\.uk/g)) {
         chrome.webRequest.onBeforeSendHeaders.removeListener(doModifyHeaders);
         chrome.tabs.onUpdated.removeListener(closeTab);
         chrome.tabs.remove(tabId);
@@ skipping 16 matching lines @@
   $('cs_xhr').addEventListener('click', doContentScriptXHR);
   $('webrequest').addEventListener('click', doWebRequestModifications);
   $('double').addEventListener('click', checkNoDoubleLogging);
 
   completed = 0;
   total = document.getElementsByTagName('button').length;
 }
 
 document.addEventListener('DOMContentLoaded', setupEvents);