Change to calculate the real NTP in TimeTicks.

base/time/time.h

Index: base/time/time.h
diff --git a/base/time/time.h b/base/time/time.h
index 112c14eab51604a3602fd2beadc18cabe66a5f1d..655500e638d48a3e8cbf9b04ebf2bddd7b0efd53 100644
--- a/base/time/time.h
+++ b/base/time/time.h
@@ -604,6 +604,13 @@ class BASE_EXPORT TimeTicks {
     return TimeTicks(ticks);
   }
 
+  // Get the TimeTick value at the time of the UnixEpoch. This is useful when
+  // you need to relate the value of TimeTicks to a real time and date.
+  // Note: this function will return the same value during the duration of
+  // the application; however it might change for next run since your TickClock

[miu, 2013/10/24 21:48:52]

nit: For clarity, I would replace the "Note:" text with something that describes
what's happening underneath in more detail.  Like:

  Note: Upon first invocation, this function takes a snapshot of the realtime
clock to establish a reference point.  This function will return the same value
for the duration of the application, but will be different in future application
runs.

[pwestin, 2013/10/24 22:39:52]

Done.

+  // might have a different starting point.
+  static TimeTicks UnixEpoch();
+
   // Returns the internal numeric value of the TimeTicks object.
   // For serializing, use FromInternalValue to reconstitute.
   int64 ToInternalValue() const {