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

Source/devtools/front_end/main/Main.js

Index: Source/devtools/front_end/main/Main.js
diff --git a/Source/devtools/front_end/main/Main.js b/Source/devtools/front_end/main/Main.js
index 51e93bb65b6651dbb6ec99e28c3634b694c9a929..7d0ed9808bb59884d425b43fc9d23d8001b0ab18 100644
--- a/Source/devtools/front_end/main/Main.js
+++ b/Source/devtools/front_end/main/Main.js
@@ -190,6 +190,7 @@ WebInspector.Main.prototype = {
     _loaded: function()
     {
         console.timeStamp("Main._loaded");
+        WebInspector.moduleManager = new WebInspector.ModuleManager(allDescriptors);
         if (WebInspector.queryParam("toolbox")) {
             new WebInspector.Toolbox();
             return;
@@ -359,7 +360,7 @@ WebInspector.Main.prototype = {
         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();