Moved zones and zone related stuff in its own directory.

src/regexp/regexp-ast.h

 // 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_REGEXP_REGEXP_AST_H_
 #define V8_REGEXP_REGEXP_AST_H_
 
 #include "src/objects.h"
 #include "src/utils.h"
-#include "src/zone-containers.h"
-#include "src/zone.h"
+#include "src/zone/zone-containers.h"
+#include "src/zone/zone.h"
 
 namespace v8 {
 namespace internal {
 
 #define FOR_EACH_REG_EXP_TREE_TYPE(VISIT) \
   VISIT(Disjunction)                      \
   VISIT(Alternative)                      \
   VISIT(Assertion)                        \
   VISIT(CharacterClass)                   \
   VISIT(Atom)                             \
@@ skipping 503 matching lines @@
   RegExpEmpty* AsEmpty() override;
   bool IsEmpty() override;
   int min_match() override { return 0; }
   int max_match() override { return 0; }
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_REGEXP_REGEXP_AST_H_