Issue 656 - Replace some __proto__ with Object.create

chrome/content/ui/sidebar.js

Index: chrome/content/ui/sidebar.js
===================================================================
--- a/chrome/content/ui/sidebar.js
+++ b/chrome/content/ui/sidebar.js
@@ -1004,17 +1004,17 @@ var treeView = {
   // Custom properties and methods
   //
 
   boxObject: null,
   atoms: null,
   filter: "",
   data: null,
   allData: [],
-  dataMap: {__proto__: null},
+  dataMap: Object.create(null),
   sortColumn: null,
   sortProc: null,
   resortTimeout: null,
   itemsDummy: null,
   whitelistDummy: null,
   itemsDummyTooltip: null,
   whitelistDummyTooltip: null,
   itemToSelect: null,
@@ -1033,17 +1033,17 @@ var treeView = {
     docDomain: createSortWithFallback(compareDocDomain, sortByAddress, false),
     docDomainDesc: createSortWithFallback(compareDocDomain, sortByAddress, true),
     filterSource: createSortWithFallback(compareFilterSource, sortByAddress, false),
     filterSourceDesc: createSortWithFallback(compareFilterSource, sortByAddress, true)
   },
   clearData: function(data) {
     var oldRows = this.rowCount;
     this.allData = [];
-    this.dataMap = {__proto__: null};
+    this.dataMap = Object.create(null);
     this.refilter();
 
     this.boxObject.rowCountChanged(0, -oldRows);
     this.boxObject.rowCountChanged(0, this.rowCount);
   },
 
   addItem: function(/**Node*/ node, /**RequestEntry*/ item, /**Boolean*/ scanComplete)
   {