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

base/synchronization/waitable_event_posix.cc

Index: base/synchronization/waitable_event_posix.cc
diff --git a/base/synchronization/waitable_event_posix.cc b/base/synchronization/waitable_event_posix.cc
index 714c111e1970cd0490483a3e5656e53b2efeaff8..fccba9d31c67c767b0b8172e10ad127ab2a5cb24 100644
--- a/base/synchronization/waitable_event_posix.cc
+++ b/base/synchronization/waitable_event_posix.cc
@@ -159,7 +159,7 @@ void WaitableEvent::Wait() {
 
 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();
@@ -184,7 +184,7 @@ bool WaitableEvent::TimedWait(const TimeDelta& max_time) {
   // 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();