Fixing --verify-predictable mode.

src/runtime/runtime-date.cc

 // Copyright 2014 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/runtime/runtime-utils.h"
 
 #include "src/arguments.h"
 #include "src/conversions-inl.h"
 #include "src/date.h"
 #include "src/dateparser-inl.h"
@@ skipping 70 matching lines @@
   HandleScope scope(isolate);
   DCHECK(args.length() == 0);
   if (FLAG_log_timer_events || FLAG_prof_cpp) LOG(isolate, CurrentTimeEvent());
 
   // According to ECMA-262, section 15.9.1, page 117, the precision of
   // the number in a Date object representing a particular instant in
   // time is milliseconds. Therefore, we floor the result of getting
   // the OS time.
   double millis;
   if (FLAG_verify_predictable) {
-    millis = 1388534400000.0;  // Jan 1 2014 00:00:00 GMT+0000
-    millis += Floor(isolate->heap()->synthetic_time());
+    millis = Floor(isolate->heap()->MonotonicallyIncreasingTimeInMs());
   } else {
     millis = Floor(base::OS::TimeCurrentMillis());
   }
   return *isolate->factory()->NewNumber(millis);
 }
 
 
 RUNTIME_FUNCTION(Runtime_DateParseString) {
   HandleScope scope(isolate);
   DCHECK_EQ(2, args.length());
@@ skipping 87 matching lines @@
   DCHECK_EQ(2, args.length());
   CONVERT_ARG_CHECKED(JSDate, date, 0);
   CONVERT_SMI_ARG_CHECKED(index, 1);
   DCHECK_LE(0, index);
   if (index == 0) return date->value();
   return JSDate::GetField(date, Smi::FromInt(index));
 }
 
 }  // namespace internal
 }  // namespace v8