Import ConditionVariable class.

test/cctest/test-platform-linux.cc

Index: test/cctest/test-platform-linux.cc
diff --git a/test/cctest/test-platform-linux.cc b/test/cctest/test-platform-linux.cc
index 7347aaceb464caf3001ff787993d14849587b2de..34ae43c2081931d9740733f8e58a8cd11c13dba5 100644
--- a/test/cctest/test-platform-linux.cc
+++ b/test/cctest/test-platform-linux.cc
@@ -39,55 +39,6 @@
 using namespace ::v8::internal;
 
 
-static void yield() {
-  usleep(1);
-}
-
-static const int kLockCounterLimit = 50;
-static int busy_lock_counter = 0;
-
-
-static void LoopIncrement(Mutex* mutex, int rem) {
-  while (true) {
-    int count = 0;
-    int last_count = -1;
-    do {
-      LockGuard<Mutex> lock_guard(mutex);
-      count = busy_lock_counter;
-      yield();
-    } while (count % 2 == rem && count < kLockCounterLimit);
-    if (count >= kLockCounterLimit) break;
-    LockGuard<Mutex> lock_guard(mutex);
-    CHECK_EQ(count, busy_lock_counter);
-    CHECK(last_count == -1 || count == last_count + 1);
-    busy_lock_counter++;
-    last_count = count;
-    yield();
-  }
-}
-
-
-static void* RunTestBusyLock(void* arg) {
-  LoopIncrement(static_cast<Mutex*>(arg), 0);
-  return 0;
-}
-
-
-// Runs two threads that repeatedly acquire the lock and conditionally
-// increment a variable.
-TEST(BusyLock) {
-  pthread_t other;
-  Mutex mutex;
-  int thread_created = pthread_create(&other,
-                                      NULL,
-                                      &RunTestBusyLock,
-                                      &mutex);
-  CHECK_EQ(0, thread_created);
-  LoopIncrement(&mutex, 1);
-  pthread_join(other, NULL);
-}
-
-
 TEST(VirtualMemory) {
   OS::SetUp();
   VirtualMemory* vm = new VirtualMemory(1 * MB);