[es6] Map/Set size getter should have "get size" name

src/v8natives.js

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // This file relies on the fact that the following declarations have been made
 // in runtime.js:
 // var $Object = global.Object;
 // var $Boolean = global.Boolean;
 // var $Number = global.Number;
 // var $Function = global.Function;
@@ skipping 28 matching lines @@
   %FunctionRemovePrototype(f);
   %SetNativeFlag(f);
 }
 
 
 // Helper function to install a getter-only accessor property.
 function InstallGetter(object, name, getter, attributes) {
   if (typeof attributes == "undefined") {
     attributes = DONT_ENUM;
   }
-  %FunctionSetName(getter, name);
+  %FunctionSetName(getter, "get " +
+      (IS_SYMBOL(name) ? "[" + %SymbolDescription(name) + "]" : name));
   %FunctionRemovePrototype(getter);
   %DefineAccessorPropertyUnchecked(object, name, getter, null, attributes);
   %SetNativeFlag(getter);
 }
 
 
 // Helper function to install a getter/setter accessor property.
 function InstallGetterSetter(object, name, getter, setter) {
-  %FunctionSetName(getter, name);
-  %FunctionSetName(setter, name);
+  var functionName =
+      IS_SYMBOL(name) ? "[" + %SymbolDescription(name) + "]" : name;
+  %FunctionSetName(getter, "get " + functionName);
+  %FunctionSetName(setter, "set " + functionName);
   %FunctionRemovePrototype(getter);
   %FunctionRemovePrototype(setter);
   %DefineAccessorPropertyUnchecked(object, name, getter, setter, DONT_ENUM);
   %SetNativeFlag(getter);
   %SetNativeFlag(setter);
 }
 
 
 // Helper function for installing constant properties on objects.
 function InstallConstants(object, constants) {
@@ skipping 1822 matching lines @@
   }
   if (!IS_SPEC_FUNCTION(method)) {
     throw MakeTypeError(kNotIterable, obj);
   }
   var iterator = %_CallFunction(obj, method);
   if (!IS_SPEC_OBJECT(iterator)) {
     throw MakeTypeError(kNotAnIterator, iterator);
   }
   return iterator;
 }