Pool implementation for zone segments

src/zone/zone-segment.cc

 // Copyright 2016 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_FILE_UTILS_H_
-#define V8_FILE_UTILS_H_
+#include "src/zone/zone-segment.h"
 
 namespace v8 {
 namespace internal {
 
-// Helper functions to manipulate file paths.
+void Segment::ZapContents() {
+#ifdef DEBUG
+  memset(start(), kZapDeadByte, capacity());
+#endif
+}
 
-char* RelativePath(char** buffer, const char* exec_path, const char* name);
+void Segment::ZapHeader() {
+#ifdef DEBUG
+  memset(this, kZapDeadByte, sizeof(Segment));
+#endif
+}
 
 }  // namespace internal
 }  // namespace v8
-
-#endif  // V8_FILE_UTILS_H_