Move desugaring of super calls with trailing spread to one runtime call.

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/parsing/parser-base.h"
 #include "src/parsing/preparse-data.h"
@@ skipping 935 matching lines @@
   V8_INLINE void CheckConflictingVarDeclarations(Scope* scope, bool* ok) {}
 
   V8_INLINE void SetLanguageMode(Scope* scope, LanguageMode mode) {
     scope->SetLanguageMode(mode);
   }
   V8_INLINE void SetAsmModule() {}
 
   V8_INLINE void MarkCollectedTailCallExpressions() {}
   V8_INLINE void MarkTailPosition(PreParserExpression expression) {}
 
-  V8_INLINE PreParserExpressionList
-  PrepareSpreadArguments(PreParserExpressionList list) {
-    return list;
-  }
-
   V8_INLINE PreParserExpression SpreadCall(PreParserExpression function,
                                            PreParserExpressionList args,
                                            int pos);
   V8_INLINE PreParserExpression SpreadCallNew(PreParserExpression function,
                                               PreParserExpressionList args,
                                               int pos);
 
   V8_INLINE PreParserExpression
   RewriteSuperCall(PreParserExpression call_expression) {
     return call_expression;
@@ skipping 592 matching lines @@
     function_state_->NextMaterializedLiteralIndex();
     function_state_->NextMaterializedLiteralIndex();
   }
   return EmptyExpression();
 }
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_PARSING_PREPARSER_H