DevTools: remove extra indirections from how extension API is built

third_party/WebKit/Source/devtools/front_end/externs.js

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 282 matching lines @@
 function Timeline() {}
 
 var extensionServer;
 
 /**
  * @constructor
  */
 function ExtensionDescriptor() {
     this.startPage = "";
     this.name = "";
+    this.exposeExperimentalAPIs = false;
 }
 
 /**
  * @constructor
  */
 function ExtensionReloadOptions() {
     this.ignoreCache = false;
     this.injectedScript = "";
     this.userAgent = "";
 }
@@ skipping 457 matching lines @@
     /** @type {(string|!Array<!Gonzales.Node>)} */
     this.content;
 }
 
 /**
  * @type {string}
  * @see http://heycam.github.io/webidl/#es-DOMException-prototype-object
  * TODO(jsbell): DOMException should be a subclass of Error.
  */
 DOMException.prototype.message;