Add a minimal Security panel to DevTools (behind a hidden experiment).

Source/devtools/front_end/sdk/Target.js

 /*
  * Copyright 2014 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.
  */
 
 /**
  * @constructor
  * @extends {Protocol.Agents}
  * @param {string} name
@@ skipping 94 matching lines @@
     {
         if (this._connection.isClosed()) {
             callback(null);
             return;
         }
 
         /** @type {!WebInspector.ConsoleModel} */
         this.consoleModel = new WebInspector.ConsoleModel(this);
         /** @type {!WebInspector.NetworkManager} */
         this.networkManager = new WebInspector.NetworkManager(this);
+        /** @type {!WebInspector.SecurityManager} */
+        this.securityManager = new WebInspector.SecurityManager(this);

[lgarron, 2015/06/12 19:56:02]

If I move SecurityManager.js to security/ instead of sdk/, then the compiler
complains about this. However, removing it breaks the functionality we need.
What should I do as an alternative?

[dgozman, 2015/06/15 16:58:41]

Just don't create it here. See WebInspector.AnimationModel.fromTarget for
example.

         /** @type {!WebInspector.ResourceTreeModel} */
         this.resourceTreeModel = new WebInspector.ResourceTreeModel(this);
         /** @type {!WebInspector.NetworkLog} */
         this.networkLog = new WebInspector.NetworkLog(this);
 
         if (this.hasJSContext())
             new WebInspector.DebuggerModel(this);
 
         /** @type {!WebInspector.RuntimeModel} */
         this.runtimeModel = new WebInspector.RuntimeModel(this);
@@ skipping 480 matching lines @@
     /**
      * @param {!WebInspector.Target} target
      */
     targetRemoved: function(target) { },
 }
 
 /**
  * @type {!WebInspector.TargetManager}
  */
 WebInspector.targetManager = new WebInspector.TargetManager();