Add keybindings and webRequest examples to the transient background page

chrome/common/extensions/docs/examples/api/transientPage/basic/background.js

 // Copyright (c) 2012 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.
 
 // Global variables only exist for the life of the page, so they get reset
 // each time the page is unloaded.
 var counter = 1;
 
 var lastTabId = -1;
 function sendMessage() {
   chrome.tabs.query({active: true, currentWindow: true}, function(tabs) {
     lastTabId = tabs[0].id;
     chrome.tabs.sendMessage(lastTabId, "Background page started.");
   });
 }
 
 sendMessage();
 chrome.browserAction.setBadgeText({text: "ON"});
 console.log("Loaded.");
 
 chrome.experimental.runtime.onInstalled.addListener(function() {
+  console.log("Installed.");
+
   // localStorage is persisted, so it's a good place to keep state that you
   // need to persist across page reloads.
   localStorage.counter = 1;
-  console.log("Installed.");
+
+  // Register a webRequest rule to redirect bing to google.
+  var wr = chrome.experimental.webRequest;
+  chrome.experimental.webRequest.onRequest.addRules([{
+    id: "0",
+    conditions: [new wr.RequestMatcher({url: {hostSuffix: "bing.com"}})],
+    actions: [new wr.RedirectRequest({redirectUrl: "http://google.com"})]
+  }]);
 });
 
 chrome.bookmarks.onRemoved.addListener(function(id, info) {
   alert("I never liked that site anyway.");
 });
 
 chrome.browserAction.onClicked.addListener(function() {
   // The transient page will unload after handling this event (assuming nothing
   // else is keeping it awake). The content script will become the main way to
   // interact with us.
   chrome.tabs.executeScript({file: "content.js"}, function() {
     // Note: we also sent a message above, upon loading the transient page,
     // but the content script will not be loaded at that point, so we send
     // another here.
     sendMessage();
   });
 });
 
+chrome.experimental.keybinding.onCommand.addListener(function(command) {
+  chrome.tabs.create({url: "http://www.google.com/"});
+});
+
 chrome.extension.onMessage.addListener(function(msg, _, sendResponse) {
   if (msg.setAlarm) {
     chrome.experimental.alarms.create({delayInSeconds: 5});
   } else if (msg.delayedResponse) {
     // Note: setTimeout itself does NOT keep the page awake. We return true
     // from the onMessage event handler, which keeps the message channel open -
     // in turn keeping the transient page awake - until we call sendResponse.
     setTimeout(function() {
       sendResponse("Got your message.");
     }, 5000);
@@ skipping 14 matching lines @@
     function() {
   chrome.tabs.query({active: true, currentWindow: true}, function(tabs) {
     // After the unload event listener runs, the page will unload, so any
     // asynchronous callbacks will not fire.
     alert("This does not show up.");
   });
   console.log("Unloading.");
   chrome.browserAction.setBadgeText({text: ""});
   chrome.tabs.sendMessage(lastTabId, "Background page unloaded.");
 });