Fix http://dartbug.com/23578:

runtime/vm/thread_test.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 "platform/assert.h"
 #include "vm/isolate.h"
 #include "vm/lockers.h"
 #include "vm/unit_test.h"
 #include "vm/profiler.h"
 
 namespace dart {
 
 UNIT_TEST_CASE(Mutex) {
   // This unit test case needs a running isolate.
-  Isolate* isolate = Isolate::Init(NULL);
+  Isolate::Flags vm_flags;
+  Dart_IsolateFlags api_flags;
+  vm_flags.CopyTo(&api_flags);
+  Isolate* isolate = Isolate::Init(NULL, api_flags);
 
   Mutex* mutex = new Mutex();
   mutex->Lock();
   EXPECT_EQ(false, mutex->TryLock());
   mutex->Unlock();
   EXPECT_EQ(true, mutex->TryLock());
   mutex->Unlock();
   {
     MutexLocker ml(mutex);
     EXPECT_EQ(false, mutex->TryLock());
   }
   // The isolate shutdown and the destruction of the mutex are out-of-order on
   // purpose.
   isolate->Shutdown();
   delete isolate;
   delete mutex;
 }
 
 
 UNIT_TEST_CASE(Monitor) {
   // This unit test case needs a running isolate.
-  Isolate* isolate = Isolate::Init(NULL);
+  Isolate::Flags vm_flags;
+  Dart_IsolateFlags api_flags;
+  vm_flags.CopyTo(&api_flags);
+  Isolate* isolate = Isolate::Init(NULL, api_flags);
   // Thread interrupter interferes with this test, disable interrupts.
   isolate->set_thread_state(NULL);
   Profiler::EndExecution(isolate);
   Monitor* monitor = new Monitor();
   monitor->Enter();
   monitor->Exit();
 
   const int kNumAttempts = 5;
   int attempts = 0;
   while (attempts < kNumAttempts) {
@@ skipping 22 matching lines @@
   EXPECT_LT(attempts, kNumAttempts);
 
   // The isolate shutdown and the destruction of the mutex are out-of-order on
   // purpose.
   isolate->Shutdown();
   delete isolate;
   delete monitor;
 }
 
 }  // namespace dart