[DevTools] Inject element into toolbox window, do not load modules there.

Source/devtools/front_end/main/AdvancedApp.js

Index: Source/devtools/front_end/main/AdvancedApp.js
diff --git a/Source/devtools/front_end/main/AdvancedApp.js b/Source/devtools/front_end/main/AdvancedApp.js
index 2dae0138fb781af5e8988870e554aafd8f32c03e..d03bb0ac3c8b32df8a4395944a25cc7acf602f28 100644
--- a/Source/devtools/front_end/main/AdvancedApp.js
+++ b/Source/devtools/front_end/main/AdvancedApp.js
@@ -88,16 +88,26 @@ WebInspector.AdvancedApp.prototype = {
     },
 
     /**
-     * @param {!WebInspector.ResponsiveDesignView} responsiveDesignView
-     * @param {!WebInspector.InspectedPagePlaceholder} placeholder
+     * @param {!Element} rootElement
+     * @override
      */
-    toolboxLoaded: function(responsiveDesignView, placeholder)
+    toolboxLoaded: function(rootElement)
     {
-        this._toolboxResponsiveDesignView = responsiveDesignView;
-        placeholder.addEventListener(WebInspector.InspectedPagePlaceholder.Events.Update, this._onSetInspectedPageBounds.bind(this, true));
+        var inspectedPagePlaceholder = new WebInspector.InspectedPagePlaceholder();
+        inspectedPagePlaceholder.addEventListener(WebInspector.InspectedPagePlaceholder.Events.Update, this._onSetInspectedPageBounds.bind(this, true));
+        this._toolboxResponsiveDesignView = new WebInspector.ResponsiveDesignView(inspectedPagePlaceholder);
+        this._toolboxResponsiveDesignView.show(rootElement);
         this._updatePageResizer();
     },
 
+    /**
+     * @return {!InspectorFrontendHostAPI}
+     */
+    inspectorFrontendHost: function()
+    {
+        return window.InspectorFrontendHost;
+    },
+
     _updatePageResizer: function()
     {
         if (this._isDocked())