DevTools: allow handing over the raw protocol connection to external clients and back.

third_party/WebKit/Source/devtools/front_end/resources/ClearStorageView.js

 // Copyright (c) 2016 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 {WebInspector.VBox}
  * @implements {WebInspector.TargetManager.Observer}
  * @param {!WebInspector.ResourcesPanel} resourcesPanel
  */
@@ skipping 58 matching lines @@
     {
         if (this._target)
             return;
         this._target = target;
         var securityOriginManager = WebInspector.SecurityOriginManager.fromTarget(target);
         this._updateOrigin(securityOriginManager.mainSecurityOrigin());
         securityOriginManager.addEventListener(WebInspector.SecurityOriginManager.Events.MainSecurityOriginChanged, this._originChanged, this);
     },
 
     /**
+     * @override
+     * @param {!WebInspector.Target} target
+     */
+    targetRemoved: function(target)
+    {
+        if (this._target !== target)
+            return;
+        var securityOriginManager = WebInspector.SecurityOriginManager.fromTarget(target);
+        securityOriginManager.removeEventListener(WebInspector.SecurityOriginManager.Events.MainSecurityOriginChanged, this._originChanged, this);
+    },
+
+    /**
      * @param {!WebInspector.Event} event
      */
     _originChanged: function(event)
     {
         var origin = /** *@type {string} */ (event.data);
         this._updateOrigin(origin);
     },
 
     /**
      * @param {string} url
@@ skipping 55 matching lines @@
         }
 
         this._clearButton.disabled = true;
         this._clearButton.textContent = WebInspector.UIString("Clearing...");
         setTimeout(() => {
             this._clearButton.disabled = false;
             this._clearButton.textContent = WebInspector.UIString("Clear selected");
         }, 500);
     },
 
-    /**
-     * @override
-     * @param {!WebInspector.Target} target
-     */
-    targetRemoved: function(target)
-    {
-    },
-
     __proto__: WebInspector.VBox.prototype
 }