Remove background finalization.

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/text_buffer.h"
@@ skipping 1587 matching lines @@
 }
 
 
 class FinalizeWeakPersistentHandlesVisitor : public HandleVisitor {
  public:
   FinalizeWeakPersistentHandlesVisitor() : HandleVisitor(Thread::Current()) {}
 
   void VisitHandle(uword addr) {
     FinalizablePersistentHandle* handle =
         reinterpret_cast<FinalizablePersistentHandle*>(addr);
-    FinalizationQueue* queue = NULL;  // Finalize in the foreground.
-    handle->UpdateUnreachable(thread()->isolate(), queue);
+    handle->UpdateUnreachable(thread()->isolate());
   }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(FinalizeWeakPersistentHandlesVisitor);
 };
 
 
 void Isolate::LowLevelShutdown() {
   // Ensure we have a zone and handle scope so that we can call VM functions,
   // but we no longer allocate new heap objects.
@@ skipping 1327 matching lines @@
 void IsolateSpawnState::DecrementSpawnCount() {
   ASSERT(spawn_count_monitor_ != NULL);
   ASSERT(spawn_count_ != NULL);
   MonitorLocker ml(spawn_count_monitor_);
   ASSERT(*spawn_count_ > 0);
   *spawn_count_ = *spawn_count_ - 1;
   ml.Notify();
 }
 
 }  // namespace dart