Fix WaitableEvent and ConditionVariable::TimedWait to use monotonic time on non-mac posix

base/synchronization/waitable_event_posix.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <algorithm>
 #include <vector>
 
 #include "base/logging.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/synchronization/condition_variable.h"
@@ skipping 141 matching lines @@
   base::ConditionVariable cv_;
 };
 
 void WaitableEvent::Wait() {
   bool result = TimedWait(TimeDelta::FromSeconds(-1));
   DCHECK(result) << "TimedWait() should never fail with infinite timeout";
 }
 
 bool WaitableEvent::TimedWait(const TimeDelta& max_time) {
   base::ThreadRestrictions::AssertWaitAllowed();
-  const Time end_time(Time::Now() + max_time);
+  const TimeTicks end_time(TimeTicks::Now() + max_time);
   const bool finite_time = max_time.ToInternalValue() >= 0;
 
   kernel_->lock_.Acquire();
   if (kernel_->signaled_) {
     if (!kernel_->manual_reset_) {
       // In this case we were signaled when we had no waiters. Now that
       // someone has waited upon us, we can automatically reset.
       kernel_->signaled_ = false;
     }
 
     kernel_->lock_.Release();
     return true;
   }
 
   SyncWaiter sw;
   sw.lock()->Acquire();
 
   Enqueue(&sw);
   kernel_->lock_.Release();
   // We are violating locking order here by holding the SyncWaiter lock but not
   // the WaitableEvent lock. However, this is safe because we don't lock @lock_
   // again before unlocking it.
 
   for (;;) {
-    const Time current_time(Time::Now());
+    const TimeTicks current_time(TimeTicks::Now());
 
     if (sw.fired() || (finite_time && current_time >= end_time)) {
       const bool return_value = sw.fired();
 
       // We can't acquire @lock_ before releasing the SyncWaiter lock (because
       // of locking order), however, in between the two a signal could be fired
       // and @sw would accept it, however we will still return false, so the
       // signal would be lost on an auto-reset WaitableEvent. Thus we call
       // Disable which makes sw::Fire return false.
       sw.Disable();
@@ skipping 200 matching lines @@
       return true;
     }
   }
 
   return false;
 }
 
 // -----------------------------------------------------------------------------
 
 }  // namespace base