Add tests for webRequest events and frame unload

chrome/test/data/extensions/api_test/webrequest/test_unload4.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([
+  // Loads a slow image in an iframe and removes it.
+  function loadImageAndRemoveFrame() {
+    const hostname = 'slow-resourcetype-image-remove-frame';
+    const url = getSlowURL(hostname);
+    const mainUrl = getPageWithFrame('empty.html', hostname);
+
+    expect([
+      { label: 'onBeforeRequest',
+        event: 'onBeforeRequest',
+        details: {
+          type: 'image',
+          url,
+          frameId: 1,
+          parentFrameId: 0,
+          frameUrl: 'unknown frame URL',
+        }
+      },
+      { label: 'onBeforeSendHeaders',
+        event: 'onBeforeSendHeaders',
+        details: {
+          type: 'image',
+          url,
+          frameId: 1,
+          parentFrameId: 0,
+        },
+      },
+      { label: 'onSendHeaders',
+        event: 'onSendHeaders',
+        details: {
+          type: 'image',
+          url,
+          frameId: 1,
+          parentFrameId: 0,
+        },
+      },
+      { label: 'onErrorOccurred',
+        event: 'onErrorOccurred',
+        details: {
+          type: 'image',
+          url,
+          frameId: 1,
+          parentFrameId: 0,
+          fromCache: false,
+          error: 'net::ERR_ABORTED',
+        },
+      }],
+      [['onBeforeRequest', 'onBeforeSendHeaders', 'onSendHeaders',
+        'onErrorOccurred']],
+      {
+        urls: ['<all_urls>'],
+        types: ['image'],
+      });
+
+    waitUntilSendHeaders('image', url, function() {
+      // Cancels load and triggers onErrorOccurred.
+      chrome.tabs.executeScript(tabId, {
+        code: 'document.querySelector("iframe").remove();',
+      });
+    });
+
+    navigateAndWait(mainUrl, function() {
+      chrome.tabs.executeScript(tabId, {
+        allFrames: true,
+        code: `if (top !== window) {
+          var img = new Image();
+          img.src = '${url}';
+        }`
+      });
+    });
+  },
+
+  // Load a slow image in the main frame and close the tab.
+  function loadImageAndRemoveTab() {
+    const hostname = 'slow-resourcetype-image-remove-tab';
+    const url = getSlowURL(hostname);
+    const mainUrl = getServerURL('empty.html', hostname);
+
+    expect([
+      { label: 'onBeforeRequest',
+        event: 'onBeforeRequest',
+        details: {
+          type: 'image',
+          url,
+          frameUrl: 'unknown frame URL',
+        }
+      },
+      { label: 'onBeforeSendHeaders',
+        event: 'onBeforeSendHeaders',
+        details: {
+          type: 'image',
+          url,
+        },
+      },
+      { label: 'onSendHeaders',
+        event: 'onSendHeaders',
+        details: {
+          type: 'image',
+          url,
+        },
+      },
+      { label: 'onErrorOccurred',
+        event: 'onErrorOccurred',
+        details: {
+          type: 'image',
+          url,
+          fromCache: false,
+          error: 'net::ERR_ABORTED',
+        },
+      }],
+      [['onBeforeRequest', 'onBeforeSendHeaders', 'onSendHeaders',
+        'onErrorOccurred']],
+      {
+        urls: ['<all_urls>'],
+        types: ['image'],
+      });
+
+    var callbackDone = chrome.test.callbackAdded();
+
+    waitUntilSendHeaders('image', url, function() {
+      // Cancels load and triggers onErrorOccurred.
+      chrome.tabs.remove(tabId, callbackDone);
+    }),
+
+    navigateAndWait(mainUrl, function() {
+      chrome.tabs.executeScript(tabId, {
+        code: `var img = new Image(); img.src = '${url}';`
+      });
+    });
+  },
+]);