[DevTools] Replace the target type with capabilities

third_party/WebKit/Source/devtools/front_end/components/RequestAppBannerActionDelegate.js

 // Copyright 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
  * @implements {WebInspector.ActionDelegate}
  */
 WebInspector.RequestAppBannerActionDelegate = function()
 {
 }
 
 WebInspector.RequestAppBannerActionDelegate.prototype = {
     /**
      * @override
      * @param {!WebInspector.Context} context
      * @param {string} actionId
      * @return {boolean}
      */
     handleAction: function(context, actionId)
     {
         var target = WebInspector.targetManager.mainTarget();
-        if (target && target.isPage()) {
+        if (target && target.hasBrowserCapability()) {
             target.pageAgent().requestAppBanner();
             WebInspector.console.show();
         }
         return true;
     }
 }