Move Declarative Web Request API out of experimental and make it a feature

chrome/renderer/resources/extensions/event.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.
 
   var eventBindingsNatives = requireNative('event_bindings');
   var AttachEvent = eventBindingsNatives.AttachEvent;
   var DetachEvent = eventBindingsNatives.DetachEvent;
   var Print = eventBindingsNatives.Print;
 
   var chromeHidden = requireNative('chrome_hidden').GetChromeHidden();
@@ skipping 239 matching lines @@
     this.validate_ = [];
     this.detach_(false);
   };
 
   // Gets the declarative API object, or undefined if this extension doesn't
   // have access to it.
   //
   // This is defined as a function (rather than a variable) because it isn't
   // accessible until the schema bindings have been generated.
   function getDeclarativeAPI() {
-    if (chromeHidden.internalAPIs.experimental)
-      return chromeHidden.internalAPIs.experimental.declarative;
-    else
-      return undefined;
+    return chromeHidden.internalAPIs.declarative;
   }
 
   chrome.Event.prototype.addRules = function(rules, opt_cb) {
     if (!this.eventOptions_.supportsRules)
       throw new Error("This event does not support rules.");
     if (!getDeclarativeAPI()) {
       throw new Error("You must have permission to use the declarative " +
                       "API to support rules in events");
     }
     getDeclarativeAPI().addRules(this.eventName_, rules, opt_cb);
@@ skipping 35 matching lines @@
     for (var i = 0; i < allAttachedEvents.length; ++i) {
       var event = allAttachedEvents[i];
       if (event)
         event.detach_(false);
     }
   };
 
   chromeHidden.dispatchError = function(msg) {
     console.error(msg);
   };