Take notification API out of experimental.

chrome/test/data/extensions/api_test/notifications/api/csp/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.
 
-const notification = chrome.experimental.notification;
+const notifications = chrome.notifications;
 
 var idString = "foo";
 
 var testCSP = function() {
   var onCreateCallback = function(id) {
     if (chrome.runtime.lastError) {
       chrome.test.succeed();
       return;
     }
     chrome.test.fail();
   }
 
   var options = {
     templateType: "basic",
     iconUrl: "http://google.com/clearly-a-security-problem.png",
     title: "Attention!",
     message: "Check out Cirque du Soleil"
   };
-  notification.create(idString, options, onCreateCallback);
+  notifications.create(idString, options, onCreateCallback);
 };
 
 function testDataURL() {
   chrome.runtime.lastError = undefined;
   var onCreateCallback = function(id) {
     if (chrome.runtime.lastError) {
       chrome.test.fail();
       return;
     }
     chrome.test.succeed();
   }
   var options = {
     templateType: "basic",
     iconUrl: "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAA" +
              "CNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHw" +
              "AAAABJRU5ErkJggg==",
     title: "Attention!",
     message: "Check out Cirque du Soleil"
   };
-  notification.create(idString, options, onCreateCallback);
+  notifications.create(idString, options, onCreateCallback);
 }
 
 function testCSPUpdateIconURL() {
   var onUpdateCallback = function(id) {
     if (chrome.runtime.lastError) {
       chrome.test.succeed();
       return;
     }
     chrome.test.fail();
   };
   var onCreateCallback = function(id) {
     if (chrome.runtime.lastError) {
       chrome.test.fail();
       return;
     }
     var options2 = {
       templateType: "basic",
       iconUrl: "http://www.google.com/favicon.ico",
       title: "Attention!",
       message: "Check out Cirque du Soleil"
     };
-    notification.update(idString, options2, onUpdateCallback);
+    notifications.update(idString, options2, onUpdateCallback);
   }
   var options = {
     templateType: "basic",
     iconUrl: "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAA" +
              "CNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHw" +
              "AAAABJRU5ErkJggg==",
     title: "Attention!",
     message: "Check out Cirque du Soleil"
   };
-  notification.create(idString, options, onCreateCallback);
+  notifications.create(idString, options, onCreateCallback);
 }
 
 function testCSPUpdateImageURL() {
   var onUpdateCallback = function(id) {
     if (chrome.runtime.lastError) {
       chrome.test.succeed();
       return;
     }
     chrome.test.fail();
   };
   var onCreateCallback = function(id) {
     if (chrome.runtime.lastError) {
       chrome.test.fail();
       return;
     }
     var options2 = {
       templateType: "basic",
       iconUrl: "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAA" +
                "CNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHw" +
                "AAAABJRU5ErkJggg==",
       imageUrl: "http://www.google.com/favicon.ico",
       title: "Attention!",
       message: "Check out Cirque du Soleil"
     };
-    notification.update(idString, options2, onUpdateCallback);
+    notifications.update(idString, options2, onUpdateCallback);
   }
   var options = {
     templateType: "image",
     iconUrl: "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAA" +
              "CNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHw" +
              "AAAABJRU5ErkJggg==",
     imageUrl: "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAA" +
              "CNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHw" +
              "AAAABJRU5ErkJggg==",
     title: "Attention!",
     message: "Check out Cirque du Soleil"
   };
-  notification.create(idString, options, onCreateCallback);
+  notifications.create(idString, options, onCreateCallback);
 }
 
 function testCSPUpdateButtonIconURL() {
   var onUpdateCallback = function(id) {
     if (chrome.runtime.lastError) {
       chrome.test.succeed();
       return;
     }
     chrome.test.fail();
   };
   var onCreateCallback = function(id) {
     if (chrome.runtime.lastError) {
       chrome.test.fail();
       return;
     }
     var options2 = {
       templateType: "basic",
       iconUrl: "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAA" +
                "CNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHw" +
                "AAAABJRU5ErkJggg==",
       title: "Attention!",
       buttons: [ {
         title: "Foo",
         iconUrl: "http://www.google.com/favicon.ico"
       } ],
       message: "Check out Cirque du Soleil"
     };
-    notification.update(idString, options2, onUpdateCallback);
+    notifications.update(idString, options2, onUpdateCallback);
   }
   var options = {
     templateType: "basic",
     iconUrl: "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAA" +
              "CNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHw" +
              "AAAABJRU5ErkJggg==",
     title: "Attention!",
     buttons: [ {
       title: "Foo",
       iconUrl: "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAA" +
                "CNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHw" +
                "AAAABJRU5ErkJggg=="
     } ],
     message: "Check out Cirque du Soleil"
   };
-  notification.create(idString, options, onCreateCallback);
+  notifications.create(idString, options, onCreateCallback);
 }
 chrome.test.runTests([
     testCSP,
     testDataURL,
     testCSPUpdateIconURL,
     testCSPUpdateImageURL,
     testCSPUpdateButtonIconURL ]);