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

Source/devtools/front_end/ui/Popover.js

 /*
  * Copyright (C) 2009 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 19 matching lines @@
 
 /**
  * @constructor
  * @extends {WebInspector.View}
  * @param {!WebInspector.PopoverHelper=} popoverHelper
  */
 WebInspector.Popover = function(popoverHelper)
 {
     WebInspector.View.call(this);
     this.markAsRoot();
-    this.element.className = "popover custom-popup-vertical-scroll custom-popup-horizontal-scroll"; // Override
+    this.element.className = WebInspector.Popover._classNamePrefix; // Override
     this._containerElement = document.createElementWithClass("div", "fill popover-container");
 
     this._popupArrowElement = this.element.createChild("div", "arrow");
     this._contentDiv = this.element.createChild("div", "content");
 
     this._popoverHelper = popoverHelper;
     this._hideBound = this.hide.bind(this);
 }
 
+WebInspector.Popover._classNamePrefix = "popover component-root custom-popup-vertical-scroll custom-popup-horizontal-scroll";
+
 WebInspector.Popover.prototype = {
     /**
      * @param {!Element} element
      * @param {!Element|!AnchorBox} anchor
      * @param {?number=} preferredWidth
      * @param {?number=} preferredHeight
      * @param {?WebInspector.Popover.Orientation=} arrowDirection
      */
     show: function(element, anchor, preferredWidth, preferredHeight, arrowDirection)
     {
@@ skipping 151 matching lines @@
             newElementPosition.width = totalWidth - borderRadius * 2;
             newElementPosition.height += scrollerWidth;
             horizontalAlignment = "left";
             if (verticalAlignment === WebInspector.Popover.Orientation.Bottom)
                 newElementPosition.y -= scrollerWidth;
             // Position arrow accurately.
             this._popupArrowElement.style.left = Math.max(0, anchorBox.x - borderRadius * 2 - arrowOffset) + "px";
             this._popupArrowElement.style.left += anchorBox.width / 2;
         }
 
-        this.element.className = "popover custom-popup-vertical-scroll custom-popup-horizontal-scroll " + verticalAlignment + "-" + horizontalAlignment + "-arrow";
+        this.element.className = WebInspector.Popover._classNamePrefix + " " + verticalAlignment + "-" + horizontalAlignment + "-arrow";
         this.element.positionAt(newElementPosition.x - borderWidth, newElementPosition.y - borderWidth, container);
         this.element.style.width = newElementPosition.width + borderWidth * 2 + "px";
         this.element.style.height = newElementPosition.height + borderWidth * 2 + "px";
     },
 
     __proto__: WebInspector.View.prototype
 }
 
 /**
  * @constructor
@@ skipping 163 matching lines @@
             this._resetHoverTimer();
         }
     }
 }
 
 /** @enum {string} */
 WebInspector.Popover.Orientation = {
     Top: "top",
     Bottom: "bottom"
 }