Moved zones and zone related stuff in its own directory.

src/ast/ast-type-bounds.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.
 
 // A container to associate type bounds with AST Expression nodes.
 
 #ifndef V8_AST_AST_TYPE_BOUNDS_H_
 #define V8_AST_AST_TYPE_BOUNDS_H_
 
 #include "src/ast/ast-types.h"
-#include "src/zone-containers.h"
+#include "src/zone/zone-containers.h"
 
 namespace v8 {
 namespace internal {
 
 class Expression;
 
 class AstTypeBounds {
  public:
   explicit AstTypeBounds(Zone* zone) : bounds_map_(zone) {}
   ~AstTypeBounds() {}
 
   AstBounds get(Expression* expression) const {
     ZoneMap<Expression*, AstBounds>::const_iterator i =
         bounds_map_.find(expression);
     return (i != bounds_map_.end()) ? i->second : AstBounds::Unbounded();
   }
 
   void set(Expression* expression, AstBounds bounds) {
     bounds_map_[expression] = bounds;
   }
 
  private:
   ZoneMap<Expression*, AstBounds> bounds_map_;
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_AST_AST_TYPE_BOUNDS_H_