Remove experimental permission from infobars API and moving it to dev channel

chrome/test/data/extensions/api_test/window_open/spanning/background.js

 // Copyright (c) 2011 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.
 
 var nextTest = null;
 openFromNormalShouldOpenInNormal();
 
 function openFromNormalShouldOpenInNormal() {
   nextTest = openFromExtensionHostInIncognitoBrowserShouldOpenInNormalBrowser;
   chrome.windows.getAll({populate: true}, function(windows) {
     chrome.test.assertEq(1, windows.length);
     chrome.test.assertFalse(windows[0].incognito);
     chrome.test.assertEq(1, windows[0].tabs.length);
     chrome.test.assertFalse(windows[0].tabs[0].incognito);
 
     // The rest of the test continues in infobar.html.
-    chrome.experimental.infobars.show({tabId: windows[0].tabs[0].id,
-                                       path: "infobar.html"});
+    chrome.infobars.show({tabId: windows[0].tabs[0].id, path: "infobar.html"});
   });
 }
 
 function openFromExtensionHostInIncognitoBrowserShouldOpenInNormalBrowser() {
   nextTest = null;
   chrome.windows.getCurrent(function(normalWin) {
     chrome.test.assertFalse(normalWin.incognito);
     // Create an incognito window.
     chrome.windows.create({ incognito: true }, function(incognitoWin) {
       // Remove the normal window. We keep running because of the incognito
       // window.
       chrome.windows.remove(normalWin.id, function() {
         chrome.tabs.getAllInWindow(incognitoWin.id, function(tabs) {
           chrome.test.assertEq(1, tabs.length);
           // The rest of the test continues in infobar.html.
-          chrome.experimental.infobars.show({tabId: tabs[0].id,
-                                             path: "infobar.html"});
+          chrome.infobars.show({tabId: tabs[0].id, path: "infobar.html"});
         });
       });
     });
   });
 }
 
 function verifyCreatedTab(tab) {
   // The new tab should be a normal tab, and it should be in a normal
   // window.
   chrome.test.assertFalse(tab.incognito);
   chrome.windows.get(tab.windowId, function(win) {
     chrome.test.assertFalse(win.incognito);
     if (nextTest) {
       nextTest();
     } else {
       chrome.test.notifyPass();
     }
   });
 }