[Parser] Remove Variable::is_possibly_eval.

src/parsing/preparser.h

 // 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.
 
 #ifndef V8_PARSING_PREPARSER_H
 #define V8_PARSING_PREPARSER_H
 
 #include "src/ast/scopes.h"
 #include "src/bailout-reason.h"
 #include "src/base/hashmap.h"
@@ skipping 502 matching lines @@
                                      PreParserExpression else_expression,
                                      int pos) {
     return PreParserExpression::Default();
   }
   PreParserExpression NewCountOperation(Token::Value op,
                                         bool is_prefix,
                                         PreParserExpression expression,
                                         int pos) {
     return PreParserExpression::Default();
   }
-  PreParserExpression NewCall(PreParserExpression expression,
-                              PreParserExpressionList arguments,
-                              int pos) {
-    if (expression.IsIdentifier() && expression.AsIdentifier().IsEval()) {
+  PreParserExpression NewCall(
+      PreParserExpression expression, PreParserExpressionList arguments,
+      int pos, Call::PossiblyEval possibly_eval = Call::NOT_EVAL) {
+    if (possibly_eval == Call::IS_POSSIBLY_EVAL) {
+      DCHECK(expression.IsIdentifier() && expression.AsIdentifier().IsEval());
       return PreParserExpression::CallEval();
     }
     return PreParserExpression::Call();
   }
   PreParserExpression NewCallNew(PreParserExpression expression,
                                  PreParserExpressionList arguments,
                                  int pos) {
     return PreParserExpression::Default();
   }
   PreParserExpression NewCallRuntime(const AstRawString* name,
@@ skipping 721 matching lines @@
     const PreParserFormalParameters& parameters, FunctionKind kind,
     FunctionLiteral::FunctionType function_type, bool* ok) {
   return pre_parser_->ParseEagerFunctionBody(function_name, pos, parameters,
                                              kind, function_type, ok);
 }
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_PARSING_PREPARSER_H