Add support for startup data (snapshot) compression.

src/list.h

 // Copyright 2006-2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 62 matching lines @@
     return data_[i];
   }
   inline T& at(int i) const { return operator[](i); }
   inline T& last() const { return at(length_ - 1); }
   inline T& first() const { return at(0); }
 
   INLINE(bool is_empty() const) { return length_ == 0; }
   INLINE(int length() const) { return length_; }
   INLINE(int capacity() const) { return capacity_; }
 
-  Vector<T> ToVector() { return Vector<T>(data_, length_); }
+  Vector<T> ToVector() const { return Vector<T>(data_, length_); }
 
   Vector<const T> ToConstVector() { return Vector<const T>(data_, length_); }
 
   // Adds a copy of the given 'element' to the end of the list,
   // expanding the list if necessary.
   void Add(const T& element);
 
   // Add all the elements from the argument list to this list.
   void AddAll(const List<T, P>& other);
 
+  // Add all the elements from the vector to this list.
+  void AddAll(const Vector<T>& other);
+
   // Inserts the element at the specific index.
   void InsertAt(int index, const T& element);
 
   // Added 'count' elements with the value 'value' and returns a
   // vector that allows access to the elements.  The vector is valid
   // until the next change is made to this list.
   Vector<T> AddBlock(T value, int count);
 
   // Removes the i'th element without deleting it even if T is a
   // pointer type; moves all elements above i "down". Returns the
@@ skipping 51 matching lines @@
 
   // Resize the list.
   void Resize(int new_capacity);
 
   DISALLOW_COPY_AND_ASSIGN(List);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_LIST_H_