ES6 symbols: implement name property

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index c8654e65d33608698376fb53d828c92226b4727a..9d39157ec2c329f236e43a3bb84a2e01e561e696 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -7398,6 +7398,8 @@ class Name: public HeapObject {
 // ES6 symbols.
 class Symbol: public Name {
  public:
+  DECL_ACCESSORS(name, Object)

[Michael Starzinger, 2013/03/22 12:03:25]

Maybe it might make sense to add a short one-line comment of what the semantics
of this field are, e.g.:

// [name]: The string representation of this symbol or undefined.

[rossberg, 2013/03/22 13:02:42]

Done.

+
   // Casting.
   static inline Symbol* cast(Object* obj);
 
@@ -7406,7 +7408,11 @@ class Symbol: public Name {
   DECLARE_VERIFIER(Symbol)
 
   // Layout description.
-  static const int kSize = Name::kSize;
+  static const int kNameOffset = Name::kSize;
+  static const int kSize = kNameOffset + kPointerSize;
+
+  typedef FixedBodyDescriptor<kNameOffset, kNameOffset + kPointerSize, kSize>
+          BodyDescriptor;
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(Symbol);