Import ConditionVariable class.

src/platform/time.h

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 70 matching lines @@
   double InMillisecondsF() const;
   int64_t InMilliseconds() const;
   int64_t InMillisecondsRoundedUp() const;
   int64_t InMicroseconds() const { return delta_; }
   int64_t InNanoseconds() const;
 
   // Converts to/from Mach time specs.
   static TimeDelta FromMachTimespec(struct mach_timespec ts);
   struct mach_timespec ToMachTimespec() const;
 
+  // Converts to/from POSIX time specs.
+  static TimeDelta FromTimespec(struct timespec ts);
+  struct timespec ToTimespec() const;
+
   TimeDelta& operator=(const TimeDelta& other) {
     delta_ = other.delta_;
     return *this;
   }
 
   // Computations with other deltas.
   TimeDelta operator+(const TimeDelta& other) const {
     return TimeDelta(delta_ + other.delta_);
   }
   TimeDelta operator-(const TimeDelta& other) const {
@@ skipping 281 matching lines @@
   int64_t ticks_;
 };
 
 inline TimeTicks operator+(const TimeDelta& delta, const TimeTicks& ticks) {
   return ticks + delta;
 }
 
 } }  // namespace v8::internal
 
 #endif  // V8_PLATFORM_TIME_H_