Make default_parameter_values a ZoneGrowableArray instead of an array in new space

runtime/vm/unit_test.h

Index: runtime/vm/unit_test.h
diff --git a/runtime/vm/unit_test.h b/runtime/vm/unit_test.h
index 9c6682e812b92a62fcd54e0122028bb9d2275e14..c9c4812364bd5d6ff68fe2d3f5e42fd14e3880ac 100644
--- a/runtime/vm/unit_test.h
+++ b/runtime/vm/unit_test.h
@@ -454,8 +454,8 @@ class CodeGenTest {
 
   SequenceNode* node_sequence() const { return node_sequence_; }
 
-  void set_default_parameter_values(const Array& value) {
-    default_parameter_values_ = value.raw();
+  void set_default_parameter_values(ZoneGrowableArray<const Instance*>* value) {
+    default_parameter_values_ = value;
   }
 
   // Compile test and set code in function.
@@ -464,7 +464,7 @@ class CodeGenTest {
  private:
   Function& function_;
   SequenceNode* node_sequence_;
-  Array& default_parameter_values_;
+  ZoneGrowableArray<const Instance*>* default_parameter_values_;
 
   DISALLOW_COPY_AND_ASSIGN(CodeGenTest);
 };