Make URL filter for web request API mandatory

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

 // Copyright (c) 2011 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 getURL = chrome.extension.getURL;
 var deepEq = chrome.test.checkDeepEq;
 var expectedEventData;
 var capturedEventData;
 var expectedEventOrder;
 var tabId;
@@ skipping 51 matching lines @@
 //     webRequest API.
 // extraInfoSpec: the union of all desired extraInfoSpecs for the events.
 function expect(data, order, filter, extraInfoSpec) {
   expectedEventData = data;
   capturedEventData = [];
   expectedEventOrder = order;
   eventsCaptured = chrome.test.callbackAdded();
   tabAndFrameUrls = {};  // Maps "{tabId}-{frameId}" to the URL of the frame.
   frameIdMap = {"-1": -1};
   removeListeners();
-  initListeners(filter || {}, extraInfoSpec || []);
+  initListeners(filter || {urls: ["<all_urls>"]}, extraInfoSpec || []);
   // Fill in default values.
   for (var i = 0; i < expectedEventData.length; ++i) {
     if (!('method' in expectedEventData[i].details)) {
       expectedEventData[i].details.method = "GET";
     }
     if (!('tabId' in expectedEventData[i].details)) {
       expectedEventData[i].details.tabId = tabIdMap[tabId];
     }
     if (!('frameId' in expectedEventData[i].details)) {
       expectedEventData[i].details.frameId = 0;
@@ skipping 207 matching lines @@
   helper(chrome.webRequest.onBeforeRequest);
   helper(chrome.webRequest.onBeforeSendHeaders);
   helper(chrome.webRequest.onAuthRequired);
   helper(chrome.webRequest.onSendHeaders);
   helper(chrome.webRequest.onHeadersReceived);
   helper(chrome.webRequest.onResponseStarted);
   helper(chrome.webRequest.onBeforeRedirect);
   helper(chrome.webRequest.onCompleted);
   helper(chrome.webRequest.onErrorOccurred);
 }