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

chrome/test/data/extensions/api_test/infobars/test.js

 // Copyright (c) 2010 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.
 
 // API test for chrome.extension.infobars.
 // browser_tests.exe --gtest_filter=ExtensionApiTest.Infobars
 
 const assertEq = chrome.test.assertEq;
 
 var windowA = 0;
@@ skipping 11 matching lines @@
     chrome.tabs.getSelected(null, function(tab) {
       tabA = tab.id;
       windowA = tab.windowId;
       console.log('tabid: ' + tabA + ' windowA: ' + windowA);
 
       chrome.windows.create({"url": "about:blank"}, function(window) {
         windowB = window.id;
         console.log('windowB: ' + windowB);
 
         // Show infobarA in window A (tab A) (and specify no callback).
-        chrome.experimental.infobars.show({"path": "infobarA.html",
+        chrome.infobars.show({"path": "infobarA.html",
                                            "tabId": tabA});
         // Flow continues in infobarCallbackA.
       });
     });
   }
 ];
 
 function infobarCallbackA() {
   // We have now added an infobar so the total count goes up one.
   assertEq(2, chrome.extension.getViews().length);
   assertEq(1, chrome.extension.getViews({"type": "infobar"}).length);
   // Window A should have 1 infobar.
   assertEq(1, chrome.extension.getViews({"type": "infobar",
                                          "windowId": windowA}).length);
   // Window B should have no infobars.
   assertEq(0, chrome.extension.getViews({"type": "infobar",
                                          "windowId": windowB}).length);
 
   chrome.tabs.getAllInWindow(windowB, function(tabs) {
     assertEq(1, tabs.length);
     tabB = tabs[0].id;
 
     // Show infobarB in (current) window B (with callback).
-    chrome.experimental.infobars.show({"path": "infobarB.html",
+    chrome.infobars.show({"path": "infobarB.html",
                                        "tabId": tabB},
                                       function(window) {
       assertEq(window.id, windowB);
       // This infobar will call back to us through infobarCallbackB (below).
     });
   });
 }
 
 function infobarCallbackB() {
   // We have now added an infobar so the total count goes up one.
   assertEq(3, chrome.extension.getViews().length);
   assertEq(2, chrome.extension.getViews({"type": "infobar"}).length);
 
   // Window A should have 1 infobar.
   assertEq(1, chrome.extension.getViews({"type": "infobar",
                                          "windowId": windowA}).length);
   // Window B should have 1 infobar.
   assertEq(1, chrome.extension.getViews({"type": "infobar",
                                          "windowId": windowB}).length);
 
   chrome.test.notifyPass();
 }
 
 chrome.test.runTests(tests);