DevTools: follow up to r183724, mark all floating components as roots.

Source/devtools/front_end/ui/View.js

 /*
  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
  * Copyright (C) 2011 Google Inc. All Rights Reserved.
  *
  * 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
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 50 matching lines @@
     }
     var styleElement = document.createElement("style");
     styleElement.type = "text/css";
     styleElement.textContent = content;
     return styleElement;
 }
 
 WebInspector.View.prototype = {
     markAsRoot: function()
     {
+        this.element.classList.add("component-root");
         WebInspector.View.__assert(!this.element.parentElement, "Attempt to mark as root attached node");
         this._isRoot = true;
     },
 
     /**
      * @return {?WebInspector.View}
      */
     parentView: function()
     {
         return this._parentView;
@@ skipping 562 matching lines @@
 {
     WebInspector.View.__assert(!child.__viewCounter && !child.__view, "Attempt to remove element containing view via regular DOM operation");
     return WebInspector.View._originalRemoveChild.call(this, child);
 }
 
 Element.prototype.removeChildren = function()
 {
     WebInspector.View.__assert(!this.__viewCounter, "Attempt to remove element containing view via regular DOM operation");
     WebInspector.View._originalRemoveChildren.call(this);
 }