Change trail from GrowableObjectArray to ZoneGrowableArray.

runtime/vm/class_finalizer.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_CLASS_FINALIZER_H_
 #define VM_CLASS_FINALIZER_H_
 
 #include "vm/allocation.h"
 #include "vm/growable_array.h"
+#include "vm/object.h"
 
 namespace dart {
 
-class AbstractType;
-class Class;
-class Error;
-class Function;
-class GrowableObjectArray;
-class MixinAppType;
-class RawAbstractType;
-class RawClass;
-class RawType;
-class Script;
-class Type;
-class TypeArguments;
-class UnresolvedClass;
-
 // Traverses all pending, unfinalized classes, validates and marks them as
 // finalized.
 class ClassFinalizer : public AllStatic {
  public:
   // Modes for type resolution and finalization. The ordering is relevant.
   enum FinalizationKind {
     kIgnore,                   // Type is ignored and replaced by dynamic.
     kDoNotResolve,             // Type resolution is postponed.
     kResolveTypeParameters,    // Resolve type parameters only.
     kFinalize,                 // Type resolution and finalization are required.
@@ skipping 105 matching lines @@
                                       const MixinAppType& mixin_app_type);
   static void ResolveSuperTypeAndInterfaces(const Class& cls,
                                             GrowableArray<intptr_t>* visited);
   static void FinalizeTypeParameters(const Class& cls,
                                      GrowableObjectArray* pending_types = NULL);
   static void FinalizeTypeArguments(const Class& cls,
                                     const TypeArguments& arguments,
                                     intptr_t num_uninitialized_arguments,
                                     Error* bound_error,
                                     GrowableObjectArray* pending_types,
-                                    GrowableObjectArray* trail);
+                                    TrailPtr trail);
   static void CheckRecursiveType(const Class& cls,
                                  const Type& type,
                                  GrowableObjectArray* pending_types);
   static void CheckTypeBounds(const Class& cls, const Type& type);
   static void CheckTypeArgumentBounds(const Class& cls,
                                       const TypeArguments& arguments,
                                       Error* bound_error);
   static void ResolveUpperBounds(const Class& cls);
   static void FinalizeUpperBounds(const Class& cls);
   static void ResolveAndFinalizeSignature(const Class& cls,
@@ skipping 17 matching lines @@
                            const char* format, ...) PRINTF_ATTRIBUTE(4, 5);
 
   // Verify implicit offsets recorded in the VM for direct access to fields of
   // Dart instances (e.g: _TypedListView, _ByteDataView).
   static void VerifyImplicitFieldOffsets();
 };
 
 }  // namespace dart
 
 #endif  // VM_CLASS_FINALIZER_H_