Fix Scanner invariants w/ literal buffers.

src/parsing/scanner.h

 // Copyright 2011 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.
 
 // Features shared by parsing and pre-parsing scanners.
 
 #ifndef V8_PARSING_SCANNER_H_
 #define V8_PARSING_SCANNER_H_
 
 #include "src/allocation.h"
@@ skipping 516 matching lines @@
     found_html_comment_ = false;
     scanner_error_ = MessageTemplate::kNone;
   }
 
   // Support BookmarkScope functionality.
   bool SetBookmark();
   void ResetToBookmark();
   bool BookmarkHasBeenSet();
   bool BookmarkHasBeenReset();
   void DropBookmark();
+  void CopyToNextTokenDesc(TokenDesc* from);
   static void CopyTokenDesc(TokenDesc* to, TokenDesc* from);
 
   void ReportScannerError(const Location& location,
                           MessageTemplate::Template error) {
     if (has_error()) return;
     scanner_error_ = error;
     scanner_error_location_ = location;
   }
 
   void ReportScannerError(int pos, MessageTemplate::Template error) {
@@ skipping 296 matching lines @@
   bool found_html_comment_;
 
   MessageTemplate::Template scanner_error_;
   Location scanner_error_location_;
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_PARSING_SCANNER_H_