DevTools: zoom is broken in hosted mode

Source/devtools/front_end/ui/ActionRegistry.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
  */
 WebInspector.ActionRegistry = function()
 {
     /** @type {!StringMap.<!Runtime.Extension>} */
@@ skipping 32 matching lines @@
            if (extension)
                extensions.push(extension);
         }, this);
         return context.applicableExtensions(extensions).values().map(function(extension) {
             return extension.descriptor()["actionId"];
         });
     },
 
     /**
      * @param {string} actionId
-     * @return {boolean}
+     * @return {!Promise.<boolean>}
      */
     execute: function(actionId)
     {
         var extension = this._actionsById.get(actionId);
         console.assert(extension, "No action found for actionId '" + actionId + "'");
-        extension.instancePromise().then(handleAction).done();
-        return !!extension;
+        return extension.instancePromise().then(handleAction);
 
         /**
          * @param {!Object} actionDelegate
+         * @return {boolean}
          */
         function handleAction(actionDelegate)
         {
-            /** @type {!WebInspector.ActionDelegate} */(actionDelegate).handleAction(WebInspector.context);
+            return /** @type {!WebInspector.ActionDelegate} */(actionDelegate).handleAction(WebInspector.context);
         }
     }
 }
 
 /**
  * @interface
  */
 WebInspector.ActionDelegate = function()
 {
 }
 
 WebInspector.ActionDelegate.prototype = {
     /**
      * @param {!WebInspector.Context} context
      * @return {boolean}
      */
     handleAction: function(context) {}
 }
 
 /** @type {!WebInspector.ActionRegistry} */
 WebInspector.actionRegistry;