Assign unique IDs to FunctionLiterals

src/parsing/preparse-data-format.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.
 
 #ifndef V8_PARSING_PREPARSE_DATA_FORMAT_H_
 #define V8_PARSING_PREPARSE_DATA_FORMAT_H_
 
 namespace v8 {
 namespace internal {
 
 // Generic and general data used by preparse data recorders and readers.
 
 struct PreparseDataConstants {
  public:
   // Layout and constants of the preparse data exchange format.
   static const unsigned kMagicNumber = 0xBadDead;
-  static const unsigned kCurrentVersion = 13;
+  static const unsigned kCurrentVersion = 14;
 
   static const int kMagicOffset = 0;
   static const int kVersionOffset = 1;
   static const int kFunctionsSizeOffset = 2;
   static const int kSizeOffset = 3;
   static const int kHeaderSize = 4;
 
   static const unsigned char kNumberTerminator = 0x80u;
 };
 
 
 }  // namespace internal
 }  // namespace v8.
 
 #endif  // V8_PARSING_PREPARSE_DATA_FORMAT_H_