Fix the event page sample extension to say "event 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;
-
-  // 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);
-    return true;
-  } else if (msg.getCounters) {
-    sendResponse({counter: counter++,
-                  persistentCounter: localStorage.counter++});
-  }
-  // If we don't return anything, the message channel will close, regardless
-  // of whether we called sendResponse.
-});
-
-chrome.experimental.alarms.onAlarm.addListener(function() {
-  alert("Time's up!");
-});
-
-chrome.experimental.runtime.onBackgroundPageUnloadingSoon.addListener(
-    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.");
-});