Moved zones and zone related stuff in its own directory.

src/ast/modules.h

 // Copyright 2012 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_AST_MODULES_H_
 #define V8_AST_MODULES_H_
 
 #include "src/parsing/scanner.h"  // Only for Scanner::Location.
 #include "src/pending-compilation-error-handler.h"
-#include "src/zone-containers.h"
+#include "src/zone/zone-containers.h"
 
 namespace v8 {
 namespace internal {
 
 
 class AstRawString;
 class ModuleInfoEntry;
 
 class ModuleDescriptor : public ZoneObject {
  public:
@@ skipping 170 matching lines @@
                   .insert(std::make_pair(specifier, module_requests_.size()))
                   .first;
     return it->second;
   }
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_AST_MODULES_H_