Dart: Remove shutdown workarounds.

mojo/dart/embedder/dart_controller.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/files/file_util.h"
 #include "base/logging.h"
 #include "base/path_service.h"
 #include "base/rand_util.h"
@@ skipping 593 matching lines @@
                                     int vm_flags_count) {
   base::AutoLock al(lock_);
   if (initialized_) {
     return;
   }
 
   // Start a handle watcher.
   handle_watcher_producer_handle_ = HandleWatcher::Start();
 
   const char* kControllerFlags[] = {
-    // TODO(zra): Fix Dart VM Shutdown race.
-    // There is a bug in Dart VM shutdown which causes its thread pool threads
-    // to potentially fail to exit when the rest of the VM is going down. This
-    // results in a segfault if they begin running again after the Dart
-    // embedder has been unloaded. Setting this flag to 0 ensures that these
-    // threads sleep forever instead of waking up and trying to run code
-    // that isn't there anymore.
-    "--worker-timeout-millis=0",
     // Disable access dart:mirrors library.
     "--enable_mirrors=false",
     // Force await and async to be keywords even outside of an async function.
     "--await_is_keyword",
   };
 
   // Number of flags the controller sets.
   const int kNumControllerFlags = arraysize(kControllerFlags);
   const int kNumFlags = vm_flags_count + kNumControllerFlags;
   const char* flags[kNumFlags];
@@ skipping 110 matching lines @@
   }
   BlockForServiceIsolateLocked();
   HandleWatcher::StopAll();
   Dart_Cleanup();
   service_isolate_running_ = false;
   initialized_ = false;
 }
 
 }  // namespace apps
 }  // namespace mojo