DevTools: move UI components to target observers in preparation to early UI initialization.

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 172 matching lines @@
 
     _debuggerPaused: function()
     {
         WebInspector.debuggerModel.removeEventListener(WebInspector.DebuggerModel.Events.DebuggerPaused, this._debuggerPaused, this);
         WebInspector.inspectorView.showPanel("sources");
     },
 
     _loaded: function()
     {
         console.timeStamp("Main._loaded");
+        WebInspector.moduleManager = new WebInspector.ModuleManager(allDescriptors);
         if (WebInspector.queryParam("toolbox")) {
             new WebInspector.Toolbox();
             return;
         }
 
         WebInspector.settings = new WebInspector.Settings();
         WebInspector.experimentsSettings = new WebInspector.ExperimentsSettings(WebInspector.queryParam("experiments") !== null);
         // This setting is needed for backwards compatibility with Devtools CodeSchool extension. DO NOT REMOVE
         WebInspector.settings.pauseOnExceptionStateString = new WebInspector.PauseOnExceptionStateSetting();
 
@@ skipping 149 matching lines @@
         var openAnchorLocationSetting = WebInspector.settings.createSetting("openLinkHandler", autoselectPanel);
         WebInspector.openAnchorLocationRegistry = new WebInspector.HandlerRegistry(openAnchorLocationSetting);
         WebInspector.openAnchorLocationRegistry.registerHandler(autoselectPanel, function() { return false; });
         WebInspector.Linkifier.setLinkHandler(new WebInspector.HandlerRegistry.LinkHandler());
 
         new WebInspector.WorkspaceController(WebInspector.workspace);
 
         new WebInspector.CSSStyleSheetMapping(WebInspector.cssModel, WebInspector.workspace, WebInspector.networkWorkspaceBinding);
 
         // Create settings before loading modules.
-        WebInspector.settings.initializeBackendSettings();
+        new WebInspector.RenderingOptions();
 
         this._registerModules();
         WebInspector.actionRegistry = new WebInspector.ActionRegistry();
         WebInspector.shortcutRegistry = new WebInspector.ShortcutRegistry(WebInspector.actionRegistry);
         this._registerForwardedShortcuts();
         this._registerMessageSinkListener();
         WebInspector.ShortcutsScreen.registerShortcuts();
 
         WebInspector.zoomManager = new WebInspector.ZoomManager();
         WebInspector.inspectorView = new WebInspector.InspectorView();
@@ skipping 458 matching lines @@
 });
 
 /**
  * @param {string} name
  * @return {?WebInspector.Panel}
  */
 WebInspector.panel = function(name)
 {
     return WebInspector.inspectorView.panel(name);
 }