Revert change 6302 until the compiler warning is addressed.

vm/code_descriptors.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_CODE_DESCRIPTORS_H_
 #define VM_CODE_DESCRIPTORS_H_
 
 #include "vm/globals.h"
 #include "vm/growable_array.h"
 #include "vm/object.h"
@@ skipping 47 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(DescriptorList);
 };
 
 
 class StackmapBuilder : public ZoneAllocated {
  public:
   StackmapBuilder() :
       builder_(new BitmapBuilder()),
       code_(Code::ZoneHandle()),
       stack_map_(Stackmap::ZoneHandle()),
-      list_(GrowableObjectArray::ZoneHandle(
-          GrowableObjectArray::New(Heap::kOld))) { }
+      list_(GrowableObjectArray::ZoneHandle(GrowableObjectArray::New())) { }
   ~StackmapBuilder() { }
 
   // Gets state of stack slot (object or regular value).
   bool IsSlotObject(intptr_t stack_slot) const {
     ASSERT(builder_ != NULL);
     return builder_->Get(stack_slot);
   }
   // Sets stack slot as containing an object.
   void SetSlotAsObject(intptr_t stack_slot) {
     ASSERT(builder_ != NULL);
@@ skipping 74 matching lines @@
   }
 
  private:
   GrowableArray<struct HandlerDesc> list_;
   DISALLOW_COPY_AND_ASSIGN(ExceptionHandlerList);
 };
 
 }  // namespace dart
 
 #endif  // VM_CODE_DESCRIPTORS_H_