Use TimeTicks instead of Time in FutexEmulation::Wait.

src/futex-emulation.cc

 // Copyright 2015 the V8 project 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 "src/futex-emulation.h"
 
 #include <limits>
 
 #include "src/base/macros.h"
 #include "src/base/platform/time.h"
@@ skipping 83 matching lines @@
         static_cast<double>(std::numeric_limits<int64_t>::max())) {
       // 2**63 nanoseconds is 292 years. Let's just treat anything greater as
       // infinite.
       use_timeout = false;
     } else {
       rel_timeout = base::TimeDelta::FromNanoseconds(
           static_cast<int64_t>(rel_timeout_ns));
     }
   }
 
-  base::Time start_time = base::Time::NowFromSystemTime();
-  base::Time timeout_time = start_time + rel_timeout;
+  base::TimeTicks start_time = base::TimeTicks::Now();
+  base::TimeTicks timeout_time = start_time + rel_timeout;
 
   wait_list_.Pointer()->AddNode(node);
 
   Object* result;
 
   while (true) {
-    base::Time current_time = base::Time::NowFromSystemTime();
+    base::TimeTicks current_time = base::TimeTicks::Now();
     if (use_timeout && current_time > timeout_time) {
       result = Smi::FromInt(Result::kTimedOut);
       break;
     }
 
     base::TimeDelta time_until_timeout = timeout_time - current_time;
     base::TimeDelta time_to_wait =
         (use_timeout && time_until_timeout < kMaxWaitTime) ? time_until_timeout
                                                            : kMaxWaitTime;
 
@@ skipping 99 matching lines @@
     }
 
     node = node->next_;
   }
 
   return Smi::FromInt(waiters);
 }
 
 }  // namespace internal
 }  // namespace v8