This fixes bug with trying to get properties of non-object (symbol).

Source/core/inspector/InjectedScriptSource.js

Index: Source/core/inspector/InjectedScriptSource.js
diff --git a/Source/core/inspector/InjectedScriptSource.js b/Source/core/inspector/InjectedScriptSource.js
index b60be3e95288e365eddde8188f7fb2b7acba3747..a1569b3be3829ad82274f02841179dd25626f948 100644
--- a/Source/core/inspector/InjectedScriptSource.js
+++ b/Source/core/inspector/InjectedScriptSource.js
@@ -173,13 +173,23 @@ function max(a, b)
 }
 
 /**
+ * @param {*} obj

[aandrey, 2014/06/05 15:13:23]

plz add:
 * FIXME: Remove once ES6 is supported natively by JS compiler.

[Alexandra Mikhaylova, 2014/06/06 09:49:51]

Done.

+ * @return {boolean}
+ */
+function isSymbol(obj)
+{
+    var type = typeof obj;
+    return (type === "symbol");
+}
+
+/**
  * @constructor
  */
 var InjectedScript = function()
 {
     /** @type {number} */
     this._lastBoundObjectId = 1;
-    /** @type {!Object.<number, Object>} */
+    /** @type {!Object.<number, (Object|symbol)>} */
     this._idToWrappedObject = { __proto__: null };
     /** @type {!Object.<number, string>} */
     this._idToObjectGroupName = { __proto__: null };
@@ -312,7 +322,7 @@ InjectedScript.prototype = {
     },
 
     /**
-     * @param {Object} object
+     * @param {Object|symbol} object
      * @param {string=} objectGroupName
      * @return {string}
      */
@@ -383,8 +393,9 @@ InjectedScript.prototype = {
         var object = this._objectForId(parsedObjectId);
         var objectGroupName = this._idToObjectGroupName[parsedObjectId.id];
 
-        if (!this._isDefined(object))
+        if (!this._isDefined(object) || isSymbol(object))
             return false;
+        object = /** @type {Object} */ (object);
         var descriptors = this._propertyDescriptors(object, ownProperties, accessorPropertiesOnly);
 
         // Go over properties, wrap object values.
@@ -415,8 +426,9 @@ InjectedScript.prototype = {
         var parsedObjectId = this._parseObjectId(objectId);
         var object = this._objectForId(parsedObjectId);
         var objectGroupName = this._idToObjectGroupName[parsedObjectId.id];
-        if (!this._isDefined(object))
+        if (!this._isDefined(object) || isSymbol(object))
             return false;
+        object = /** @type {Object} */ (object);
         var descriptors = [];
         var internalProperties = InjectedScriptHost.getInternalProperties(object);
         if (internalProperties) {
@@ -497,8 +509,7 @@ InjectedScript.prototype = {
                     continue;
 
                 var name = property;
-                var type = typeof property;
-                if (type === "symbol")
+                if (isSymbol(property))
                     name = injectedScript._describe(property);
 
                 try {
@@ -532,7 +543,7 @@ InjectedScript.prototype = {
                 descriptor.name = name;
                 if (o === object)
                     descriptor.isOwn = true;
-                if (type === "symbol")
+                if (isSymbol(property))
                     descriptor.symbol = property;
                 push(descriptors, descriptor);
             }
@@ -874,7 +885,7 @@ InjectedScript.prototype = {
 
     /**
      * @param {Object} objectId
-     * @return {Object}
+     * @return {Object|symbol}
      */
     _objectForId: function(objectId)
     {
@@ -883,7 +894,7 @@ InjectedScript.prototype = {
 
     /**
      * @param {string} objectId
-     * @return {Object}
+     * @return {Object|symbol}
      */
     findObjectById: function(objectId)
     {