DevTools: Fix all outstanding JavaScript style issues.

third_party/WebKit/Source/devtools/front_end/elements/ElementsTreeOutline.js

 /*
  * Copyright (C) 2007, 2008 Apple Inc.  All rights reserved.
  * Copyright (C) 2008 Matt Lilek <webkit@mattlilek.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 649 matching lines @@
 
         if (!element || element.isEventWithinDisclosureTriangle(event))
             return;
 
         element.select();
     },
 
     /**
      * @param {?TreeElement} treeElement
      */
-    setHoverEffect: function (treeElement)
+    setHoverEffect: function(treeElement)
     {
         if (this._previousHoveredElement === treeElement)
             return;
 
         if (this._previousHoveredElement) {
             this._previousHoveredElement.hovered = false;
             delete this._previousHoveredElement;
         }
 
         if (treeElement) {
@@ skipping 61 matching lines @@
         while (node) {
             if (node === this._treeElementBeingDragged._node)
                 return false;
             node = node.parentNode;
         }
 
         treeElement.updateSelection();
         treeElement.listItemElement.classList.add("elements-drag-over");
         this._dragOverTreeElement = treeElement;
         event.preventDefault();
-        event.dataTransfer.dropEffect = 'move';
+        event.dataTransfer.dropEffect = "move";
         return false;
     },
 
     _ondragleave: function(event)
     {
         this._clearDragOverTreeElementMarker();
         event.preventDefault();
         return false;
     },
 
@@ skipping 1021 matching lines @@
             if (node) {
                 this.treeOutline._selectedDOMNode = node;
                 this.treeOutline._selectedNodeChanged();
             }
         }
         return true;
     },
 
     __proto__: TreeElement.prototype
 }