Refactor the implementation of the webNavigation extension API.

chrome/test/data/extensions/api_test/webnavigation/crash/test_crash.js

 // Copyright 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.
 
 onload = function() {
   var URL_A =
       "http://www.a.com:PORT/extensions/api_test/webnavigation/crash/a.html";
   var URL_B =
       "http://www.a.com:PORT/extensions/api_test/webnavigation/crash/b.html";
   chrome.tabs.create({"url": "about:blank"}, function(tab) {
     var tabId = tab.id;
     chrome.test.getConfig(function(config) {
       var fixPort = function(url) {
         return url.replace(/PORT/g, config.testServer.port);
       };
       URL_A = fixPort(URL_A);
       URL_B = fixPort(URL_B);
 
       chrome.test.runTests([
         // Navigates to an URL, then the renderer crashes, the navigates to
         // another URL.
         function crash() {
           expect([
             { label: "a-onBeforeNavigate",
               event: "onBeforeNavigate",
               details: { frameId: 0,
                          parentFrameId: -1,
-                         processId: 0,
+                         processId: -1,
                          tabId: 0,
                          timeStamp: 0,
                          url: URL_A }},
             { label: "a-onCommitted",
               event: "onCommitted",
               details: { frameId: 0,
                          processId: 0,
                          tabId: 0,
                          timeStamp: 0,
                          transitionQualifiers: [],
@@ skipping 10 matching lines @@
               event: "onCompleted",
               details: { frameId: 0,
                          processId: 0,
                          tabId: 0,
                          timeStamp: 0,
                          url: URL_A }},
             { label: "b-onBeforeNavigate",
               event: "onBeforeNavigate",
               details: { frameId: 0,
                          parentFrameId: -1,
-                         processId: 0,
+                         processId: -1,
                          tabId: 0,
                          timeStamp: 0,
                          url: URL_B }},
             { label: "b-onCommitted",
               event: "onCommitted",
               details: { frameId: 0,
                          processId: 0,
                          tabId: 0,
                          timeStamp: 0,
                          transitionQualifiers: [],
@@ skipping 15 matching lines @@
                          url: URL_B }}],
             [ navigationOrder("a-"), navigationOrder("b-") ]);
 
           // Notify the api test that we're waiting for the user.
           chrome.test.notifyPass();
         },
       ]);
     });
   });
 };