Wrap ClassLiterals in DoExpressions instead of giving them BlockScopes.

src/interpreter/bytecode-generator.h

Index: src/interpreter/bytecode-generator.h
diff --git a/src/interpreter/bytecode-generator.h b/src/interpreter/bytecode-generator.h
index 67e3a05ba2c0c66ece27058fc67facc4053a4236..2def89346746169b38e8dc5308f2f33227e90497 100644
--- a/src/interpreter/bytecode-generator.h
+++ b/src/interpreter/bytecode-generator.h
@@ -127,7 +127,6 @@ class BytecodeGenerator final : public AstVisitor<BytecodeGenerator> {
   void VisitArgumentsObject(Variable* variable);
   void VisitRestArgumentsArray(Variable* rest);
   void VisitCallSuper(Call* call);
-  void VisitClassLiteralContents(ClassLiteral* expr);
   void VisitClassLiteralForRuntimeDefinition(ClassLiteral* expr);
   void VisitClassLiteralProperties(ClassLiteral* expr, Register literal,
                                    Register prototype);