Preparation for moving reusable handles to thread and more cleanups: isolate -> thread based handle…

runtime/vm/zone.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_ZONE_H_
 #define VM_ZONE_H_
 
 #include "platform/utils.h"
 #include "vm/allocation.h"
 #include "vm/handles.h"
+#include "vm/thread.h"
 #include "vm/memory_region.h"
 
 namespace dart {
 
 DECLARE_DEBUG_FLAG(bool, trace_zones);
 
 // Zones support very fast allocation of small chunks of memory. The
 // chunks cannot be deallocated individually, but instead zones
 // support deallocating all chunks in one fast operation.
 
@@ skipping 269 matching lines @@
     memmove(reinterpret_cast<void*>(new_data),
             reinterpret_cast<void*>(old_data),
             old_len * kElementSize);
   }
   return new_data;
 }
 
 }  // namespace dart
 
 #endif  // VM_ZONE_H_