Move Proxy Settings API out of experimental

chrome/test/data/extensions/api_test/proxy/events/test.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.
 
 // proxy api test
 // browser_tests.exe --gtest_filter=ProxySettingsApiTest.ProxyEvents
 
 var captured_events = [];
 var expected_events = [
     {
       error: "net::ERR_PROXY_CONNECTION_FAILED",
       details: "",
       fatal: true
     },
     {
       error: "net::ERR_PROXY_CONNECTION_FAILED",
       details: "",
       fatal: true
     },
     {
       error: "net::ERR_PAC_SCRIPT_FAILED",
       details: "line: 1: Uncaught SyntaxError: Unexpected token !",
       fatal: false
     }
   ];
 
-chrome.experimental.proxy.onProxyError.addListener(function (error) {
+chrome.proxy.onProxyError.addListener(function (error) {
   captured_events.push(error);
   if (captured_events.length < expected_events.length)
     return;
   chrome.test.assertEq(expected_events, captured_events);
   chrome.test.notifyPass();
 });
 
 function pacTest(e) {
   var config = {
     mode: "pac_script",
     pacScript: {
       data: "trash!",
       mandatory: false
     }
   };
-  chrome.experimental.proxy.settings.set({'value': config});
+  chrome.proxy.settings.set({'value': config});
 }
 
 var rules = {
   singleProxy: { host: "does.not.exist" }
 };
 
 var config = { rules: rules, mode: "fixed_servers" };
-chrome.experimental.proxy.settings.set({'value': config}, function () {
+chrome.proxy.settings.set({'value': config}, function () {
   var req = new XMLHttpRequest();
   req.open("GET", "http://127.0.0.1/", true);
   req.onload = function () {
     chrome.test.notifyFail("proxy settings should not work");
   }
   req.onerror = pacTest;
   req.send(null);
 });