A64: Synchronize with r16489.

src/platform-posix.cc

Index: src/platform-posix.cc
diff --git a/src/platform-posix.cc b/src/platform-posix.cc
index acef4f9c306674b16a621b019e18f8ee862f3f52..3b39dc7ab48c4c96372317a04f30f66e44c82d1b 100644
--- a/src/platform-posix.cc
+++ b/src/platform-posix.cc
@@ -219,11 +219,6 @@ void OS::Sleep(int milliseconds) {
 }
 
 
-int OS::NumberOfCores() {
-  return sysconf(_SC_NPROCESSORS_ONLN);
-}
-
-
 void OS::Abort() {
   // Redirect to std abort to signal abnormal program termination.
   if (FLAG_break_on_abort) {
@@ -320,19 +315,7 @@ int OS::GetUserTime(uint32_t* secs,  uint32_t* usecs) {
 
 
 double OS::TimeCurrentMillis() {
-  struct timeval tv;
-  if (gettimeofday(&tv, NULL) < 0) return 0.0;
-  return (static_cast<double>(tv.tv_sec) * 1000) +
-         (static_cast<double>(tv.tv_usec) / 1000);
-}
-
-
-int64_t OS::Ticks() {
-  // gettimeofday has microsecond resolution.
-  struct timeval tv;
-  if (gettimeofday(&tv, NULL) < 0)
-    return 0;
-  return (static_cast<int64_t>(tv.tv_sec) * 1000000) + tv.tv_usec;
+  return Time::Now().ToJsTime();
 }
 
 
@@ -758,48 +741,6 @@ void Thread::SetThreadLocal(LocalStorageKey key, void* value) {
 }
 
 
-class POSIXMutex : public Mutex {
- public:
-  POSIXMutex() {
-    pthread_mutexattr_t attr;
-    memset(&attr, 0, sizeof(attr));
-    int result = pthread_mutexattr_init(&attr);
-    ASSERT(result == 0);
-    result = pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
-    ASSERT(result == 0);
-    result = pthread_mutex_init(&mutex_, &attr);
-    ASSERT(result == 0);
-    result = pthread_mutexattr_destroy(&attr);
-    ASSERT(result == 0);
-    USE(result);
-  }
-
-  virtual ~POSIXMutex() { pthread_mutex_destroy(&mutex_); }
-
-  virtual int Lock() { return pthread_mutex_lock(&mutex_); }
-
-  virtual int Unlock() { return pthread_mutex_unlock(&mutex_); }
-
-  virtual bool TryLock() {
-    int result = pthread_mutex_trylock(&mutex_);
-    // Return false if the lock is busy and locking failed.
-    if (result == EBUSY) {
-      return false;
-    }
-    ASSERT(result == 0);  // Verify no other errors.
-    return true;
-  }
-
- private:
-  pthread_mutex_t mutex_;   // Pthread mutex for POSIX platforms.
-};
-
-
-Mutex* OS::CreateMutex() {
-  return new POSIXMutex();
-}
-
-
 // ----------------------------------------------------------------------------
 // POSIX socket support.
 //