Redo background compilation queues to allocate queue and its element in the C-heap

runtime/vm/isolate.cc

 // Copyright (c) 2013, 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/isolate.h"
 
 #include "include/dart_api.h"
 #include "include/dart_native_api.h"
 #include "platform/assert.h"
 #include "platform/json.h"
@@ skipping 776 matching lines @@
       tag_table_(GrowableObjectArray::null()),
       deoptimized_code_array_(GrowableObjectArray::null()),
       background_compiler_(NULL),
       pending_service_extension_calls_(GrowableObjectArray::null()),
       registered_service_extension_handlers_(GrowableObjectArray::null()),
       metrics_list_head_(NULL),
       compilation_allowed_(true),
       all_classes_finalized_(false),
       next_(NULL),
       pause_loop_monitor_(NULL),
-      cha_invalidation_gen_(0),
-      field_invalidation_gen_(0),
-      prefix_invalidation_gen_(0) {
+      cha_invalidation_gen_(kInvalidGen),
+      field_invalidation_gen_(kInvalidGen),
+      prefix_invalidation_gen_(kInvalidGen) {
   flags_.CopyFrom(api_flags);
   Thread::Current()->set_vm_tag(VMTag::kEmbedderTagId);
   set_user_tag(UserTags::kDefaultUserTag);
 }
 
 #undef REUSABLE_HANDLE_SCOPE_INIT
 #undef REUSABLE_HANDLE_INITIALIZERS
 
 Isolate::~Isolate() {
   free(name_);
@@ skipping 1721 matching lines @@
 }
 
 
 RawInstance* IsolateSpawnState::BuildMessage(Thread* thread) {
   return DeserializeObject(thread,
                            serialized_message_, serialized_message_len_);
 }
 
 
 }  // namespace dart