DevTools: do not wait for filesystems to create connection.

third_party/WebKit/Source/devtools/front_end/main/Main.js

 /*
  * Copyright (C) 2006, 2007, 2008 Apple Inc.  All rights reserved.
  * Copyright (C) 2007 Matt Lilek (pewtermoose@gmail.com).
  * Copyright (C) 2009 Joseph Pecoraro
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
@@ skipping 122 matching lines @@
      * @suppressGlobalPropertiesCheck
      */
     _createAppUI: function()
     {
         console.time("Main._createAppUI");
 
         WebInspector.viewManager = new WebInspector.ViewManager();
 
         // Request filesystems early, we won't create connections until callback is fired. Things will happen in parallel.
         WebInspector.isolatedFileSystemManager = new WebInspector.IsolatedFileSystemManager();
-        WebInspector.isolatedFileSystemManager.waitForFileSystems()
-            .then(this._didInitializeFileSystemManager.bind(this));
 
         var themeSetting = WebInspector.settings.createSetting("uiTheme", "default");
         WebInspector.initializeUIUtils(document, themeSetting);
         themeSetting.addChangeListener(WebInspector.reload.bind(WebInspector));
 
         WebInspector.installComponentRootStyles(/** @type {!Element} */ (document.body));
 
         this._addMainEventListeners(document);
 
         var canDock = !!Runtime.queryParam("can_dock");
@@ skipping 88 matching lines @@
 
         /**
          * @param {string} value
          * @param {!WebInspector.QueryParamHandler} handler
          */
         function handleQueryParam(value, handler)
         {
             handler.handleQueryParam(value);
         }
 
-        this._appUIShown = true;
-        if (this._fileSystemManagerInitialized) {
-            // Allow UI cycles to repaint prior to creating connection.
-            setTimeout(this._initializeTarget.bind(this), 0);
-        }
+        // Allow UI cycles to repaint prior to creating connection.
+        setTimeout(this._initializeTarget.bind(this), 0);
         console.timeEnd("Main._showAppUI");
     },
 
-    _didInitializeFileSystemManager: function()
-    {
-        this._fileSystemManagerInitialized = true;
-        if (this._appUIShown)
-            this._initializeTarget();
-    },
-
     _initializeTarget: function()
     {
         console.time("Main._initializeTarget");
         WebInspector.targetManager.connectToMainTarget(webSocketConnectionLost);
 
         InspectorFrontendHost.readyForTest();
         // Asynchronously run the extensions.
         setTimeout(this._lateInitialization.bind(this), 100);
         console.timeEnd("Main._initializeTarget");
 
@@ skipping 805 matching lines @@
      * @override
      * @return {?Element}
      */
     settingElement: function()
     {
         return WebInspector.SettingsUI.createSettingCheckbox(WebInspector.UIString("Show rulers"), WebInspector.moduleSetting("showMetricsRulers"));
     }
 };
 
 new WebInspector.Main();