[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;
 // var $Array = global.Array;
 
 var $isNaN = GlobalIsNaN;
 var $isFinite = GlobalIsFinite;
 
 // ----------------------------------------------------------------------------
 
+// ES6 - 9.2.11 SetFunctionName
+function SetFunctionName(f, name, prefix) {
+  if (IS_SYMBOL(name)) {
+    name = "[" + %SymbolDescription(name) + "]";
+  }
+  if (IS_UNDEFINED(prefix)) {
+    %FunctionSetName(f, name);
+  } else {
+    %FunctionSetName(f, prefix + " " + name);
+  }
+}
+
+
 // Helper function used to install functions on objects.
 function InstallFunctions(object, attributes, functions) {
   %OptimizeObjectForAddingMultipleProperties(object, functions.length >> 1);
   for (var i = 0; i < functions.length; i += 2) {
     var key = functions[i];
     var f = functions[i + 1];
-    %FunctionSetName(f, key);
+    SetFunctionName(f, key);
     %FunctionRemovePrototype(f);
     %AddNamedProperty(object, key, f, attributes);
     %SetNativeFlag(f);
   }
   %ToFastProperties(object);
 }
 
 
 function OverrideFunction(object, name, f) {
   ObjectDefineProperty(object, name, { value: f,
                                        writeable: true,
                                        configurable: true,
                                        enumerable: false });
-  %FunctionSetName(f, name);
+  SetFunctionName(f, name);
   %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);
+  SetFunctionName(getter, name, "get");
   %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);
+  SetFunctionName(getter, name, "get");
+  SetFunctionName(setter, name, "set");
   %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;
 }