Add tests for webRequest events and frame unload

chrome/test/data/extensions/api_test/webrequest/test_unload5.js

+// Copyright 2016 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.
+
+runTests([
+  // Start a XMLHttpRequest in an frame and remove the frame.

[battre, 2016/05/23 11:17:08]

nit: a frame

[robwu, 2016/05/23 11:51:03]

Done.

+  // Unlike the previous tests (test_unload1, 2, 3, 4), this test doesn't wait
+  // for a server response and immediately removes the frame after issuing an
+  // asynchronous request.
+  function startXMLHttpRequestAndRemoveFrame() {
+    const hostname = 'slow-resourcetype-xhr-immediately-remove-frame';
+    const url = getSlowURL(hostname);
+    const mainUrl = getPageWithFrame('empty.html', hostname);
+
+    expect([
+      { label: 'onBeforeRequest',
+        event: 'onBeforeRequest',
+        details: {
+          type: 'xmlhttprequest',
+          url,
+          frameId: 1,
+          parentFrameId: 0,
+          frameUrl: 'unknown frame URL',
+        }
+      },
+      { label: 'onBeforeSendHeaders',
+        event: 'onBeforeSendHeaders',
+        details: {
+          type: 'xmlhttprequest',
+          url,
+          frameId: 1,
+          parentFrameId: 0,
+        },
+      },
+      { label: 'onSendHeaders',
+        event: 'onSendHeaders',
+        details: {
+          type: 'xmlhttprequest',
+          url,
+          frameId: 1,
+          parentFrameId: 0,
+        },
+      },
+      { label: 'onErrorOccurred',
+        event: 'onErrorOccurred',
+        details: {
+          type: 'xmlhttprequest',
+          url,
+          frameId: 1,
+          parentFrameId: 0,
+          fromCache: false,
+          error: 'net::ERR_ABORTED',
+        },
+      }],
+      [['onBeforeRequest', 'onBeforeSendHeaders', 'onSendHeaders',
+        'onErrorOccurred']],
+      {
+        urls: ['<all_urls>'],
+        types: ['xmlhttprequest'],
+      });
+
+    navigateAndWait(mainUrl, function() {
+      chrome.tabs.executeScript(tabId, {
+        allFrames: true,
+        code: `if (top !== window) {
+          var x = new XMLHttpRequest();
+          x.open('GET', '${url}', true);
+          x.send();
+          frameElement.remove();
+        }`
+      });
+    });
+  },
+
+  // Start a XMLHttpRequest in the main frame and immediately remove the tab.

[battre, 2016/05/23 11:17:08]

nit: "an XMLHttpRequest" 

[robwu, 2016/05/23 11:51:03]

Done.

+  function startXMLHttpRequestAndRemoveTab() {
+    const hostname = 'slow-resourcetype-xhr-immediately-remove-tab';
+    const url = getSlowURL(hostname);
+    const mainUrl = getServerURL('empty.html', hostname);
+
+    expect([
+      { label: 'onBeforeRequest',
+        event: 'onBeforeRequest',
+        details: {
+          type: 'xmlhttprequest',
+          url,
+          frameUrl: 'unknown frame URL',
+          tabId: 1,
+        }
+      },
+      { label: 'onBeforeSendHeaders',
+        event: 'onBeforeSendHeaders',
+        details: {
+          type: 'xmlhttprequest',
+          url,
+          tabId: 1,
+        },
+      },
+      { label: 'onSendHeaders',
+        event: 'onSendHeaders',
+        details: {
+          type: 'xmlhttprequest',
+          url,
+          tabId: 1,
+        },
+      },
+      { label: 'onErrorOccurred',
+        event: 'onErrorOccurred',
+        details: {
+          type: 'xmlhttprequest',
+          url,
+          fromCache: false,
+          error: 'net::ERR_ABORTED',
+          tabId: 1,
+        },
+      }],
+      [['onBeforeRequest', 'onBeforeSendHeaders', 'onSendHeaders',
+        'onErrorOccurred']],
+      {
+        urls: ['<all_urls>'],
+        types: ['xmlhttprequest'],
+      });
+
+    var callbackDone = chrome.test.callbackAdded();
+
+    // Creating a new tab instead of re-using the tab from the test framework
+    // because a page can only close itself if it has no navigation history.
+    chrome.tabs.create({
+      url: mainUrl,
+    }, function(tab) {
+      chrome.tabs.executeScript(tab.id, {
+        code: `
+          var x = new XMLHttpRequest();
+          x.open('GET', '${url}', true);
+          x.send();
+          window.close();
+          // Closing the tab should not be blocked. If it does, then the slow
+          // request will eventually complete and cause a test failure.
+        `
+      }, callbackDone);
+    });
+  },
+]);