Moved zones and zone related stuff in its own directory.

src/small-pointer-list.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_SMALL_POINTER_LIST_H_
 #define V8_SMALL_POINTER_LIST_H_
 
 #include "src/base/logging.h"
 #include "src/globals.h"
-#include "src/zone.h"
+#include "src/zone/zone.h"
 
 namespace v8 {
 namespace internal {
 
 // SmallPointerList is a list optimized for storing no or just a
 // single value. When more values are given it falls back to ZoneList.
 //
 // The interface tries to be as close to List from list.h as possible.
 template <typename T>
 class SmallPointerList {
@@ skipping 146 matching lines @@
 
   intptr_t data_;
 
   DISALLOW_COPY_AND_ASSIGN(SmallPointerList);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_SMALL_POINTER_LIST_H_