Cleanup Semaphore class.

test/cctest/test-log.cc

Index: test/cctest/test-log.cc
diff --git a/test/cctest/test-log.cc b/test/cctest/test-log.cc
index 6bf56f0fa40395405586c842d197e4ff56cf508c..8bf306f2de85fe0f05aebc757841b5d68f2ab794 100644
--- a/test/cctest/test-log.cc
+++ b/test/cctest/test-log.cc
@@ -127,7 +127,7 @@ class LoopingThread : public v8::internal::Thread {
  public:
   explicit LoopingThread(v8::internal::Isolate* isolate)
       : v8::internal::Thread(isolate),
-        semaphore_(v8::internal::OS::CreateSemaphore(0)),
+        semaphore_(new v8::internal::Semaphore(0)),
         run_(true) {
   }
 
@@ -213,7 +213,7 @@ class TestSampler : public v8::internal::Sampler {
  public:
   explicit TestSampler(v8::internal::Isolate* isolate)
       : Sampler(isolate, 0, true, true),
-        semaphore_(v8::internal::OS::CreateSemaphore(0)),
+        semaphore_(new v8::internal::Semaphore(0)),
         was_sample_stack_called_(false) {
   }