Install the 'name' property in classes at runtime

src/parsing/preparser.h

Index: src/parsing/preparser.h
diff --git a/src/parsing/preparser.h b/src/parsing/preparser.h
index c9227bae3f6441462bae1e0fd9c4c16079e2a26b..b4b44ffe2787cae5d1d4586fd7f25c32fb17075e 100644
--- a/src/parsing/preparser.h
+++ b/src/parsing/preparser.h
@@ -67,6 +67,9 @@ class PreParserIdentifier {
   static PreParserIdentifier Async() {
     return PreParserIdentifier(kAsyncIdentifier);
   }
+  static PreParserIdentifier Name() {
+    return PreParserIdentifier(kNameIdentifier);
+  }
   bool IsEmpty() const { return type_ == kEmptyIdentifier; }
   bool IsEval() const { return type_ == kEvalIdentifier; }
   bool IsArguments() const { return type_ == kArgumentsIdentifier; }
@@ -79,6 +82,7 @@ class PreParserIdentifier {
   bool IsConstructor() const { return type_ == kConstructorIdentifier; }
   bool IsEnum() const { return type_ == kEnumIdentifier; }
   bool IsAwait() const { return type_ == kAwaitIdentifier; }
+  bool IsName() const { return type_ == kNameIdentifier; }
   bool IsFutureStrictReserved() const {
     return type_ == kFutureStrictReservedIdentifier ||
            type_ == kLetIdentifier || type_ == kStaticIdentifier ||
@@ -109,7 +113,8 @@ class PreParserIdentifier {
     kConstructorIdentifier,
     kEnumIdentifier,
     kAwaitIdentifier,
-    kAsyncIdentifier
+    kAsyncIdentifier,
+    kNameIdentifier
   };
 
   explicit PreParserIdentifier(Type type) : type_(type), string_(nullptr) {}
@@ -1131,6 +1136,10 @@ class PreParser : public ParserBase<PreParser> {
     return identifier.IsConstructor();
   }
 
+  V8_INLINE bool IsName(PreParserIdentifier identifier) const {
+    return identifier.IsName();
+  }
+
   V8_INLINE bool IsDirectEvalCall(PreParserExpression expression) const {
     return expression.IsDirectEvalCall();
   }