Revert of Introduce a separate FunctionLiteral ID for Eval

src/ast/ast.h

Index: src/ast/ast.h
diff --git a/src/ast/ast.h b/src/ast/ast.h
index 52a77093777c54ad5329d491ac1de7b0a6903c9e..7dcd535c65aab1b425f1be837f6488820ff1232b 100644
--- a/src/ast/ast.h
+++ b/src/ast/ast.h
@@ -2550,7 +2550,7 @@
     kAccessorOrMethod
   };
 
-  enum IdType { kIdTypeEval = -2, kIdTypeInvalid = -1, kIdTypeTopLevel = 0 };
+  enum IdType { kIdTypeInvalid = -1, kIdTypeTopLevel = 0 };
 
   enum ParameterFlag { kNoDuplicateParameters, kHasDuplicateParameters };
 
@@ -3452,14 +3452,14 @@
   FunctionLiteral* NewScriptOrEvalFunctionLiteral(
       DeclarationScope* scope, ZoneList<Statement*>* body,
       int materialized_literal_count, int expected_property_count,
-      int parameter_count, int function_literal_id) {
+      int parameter_count) {
     return new (zone_) FunctionLiteral(
         zone_, ast_value_factory_->empty_string(), ast_value_factory_, scope,
         body, materialized_literal_count, expected_property_count,
         parameter_count, parameter_count, FunctionLiteral::kAnonymousExpression,
         FunctionLiteral::kNoDuplicateParameters,
         FunctionLiteral::kShouldLazyCompile, 0, false, true,
-        function_literal_id);
+        FunctionLiteral::kIdTypeTopLevel);
   }
 
   ClassLiteral::Property* NewClassLiteralProperty(