Fix incorrect new-space allocations in the parser during background compilation

runtime/vm/object.cc

 // 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.
 
 #include "vm/object.h"
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "vm/assembler.h"
 #include "vm/become.h"
@@ skipping 18026 matching lines @@
 void MixinAppType::set_mixin_types(const Array& value) const {
   StorePointer(&raw_ptr()->mixin_types_, value.raw());
 }
 
 
 RawMixinAppType* MixinAppType::New() {
   // MixinAppType objects do not survive finalization, so allocate
   // on new heap.
   RawObject* raw = Object::Allocate(MixinAppType::kClassId,
                                     MixinAppType::InstanceSize(),
-                                    Heap::kNew);
+                                    Heap::kOld);
   return reinterpret_cast<RawMixinAppType*>(raw);
 }
 
 
 RawMixinAppType* MixinAppType::New(const AbstractType& super_type,
                                    const Array& mixin_types) {
   const MixinAppType& result = MixinAppType::Handle(MixinAppType::New());
   result.set_super_type(super_type);
   result.set_mixin_types(mixin_types);
   return result.raw();
@@ skipping 4579 matching lines @@
   return UserTag::null();
 }
 
 
 const char* UserTag::ToCString() const {
   const String& tag_label = String::Handle(label());
   return tag_label.ToCString();
 }
 
 }  // namespace dart