Add 'base::Time::Max()' to explicitly refer to the end of time.

base/time.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 "base/time.h"
 
 #include <math.h>
 #if defined(OS_WIN)
 #include <float.h>
 #endif
 
+#include <limits>
+
 #include "base/sys_string_conversions.h"
 #include "base/third_party/nspr/prtime.h"
 
 #include "base/logging.h"
 
 namespace base {
 
 namespace {
 #if defined(OS_WIN)
 inline bool isnan(double num) { return !!_isnan(num); }
@@ skipping 35 matching lines @@
       Time::kMicrosecondsPerMillisecond;
 }
 
 int64 TimeDelta::InMicroseconds() const {
   return delta_;
 }
 
 // Time -----------------------------------------------------------------------
 
 // static
+Time Time::Max() {
+  return Time(std::numeric_limits<int64>::max());
+}
+
+// static
 Time Time::FromTimeT(time_t tt) {
   if (tt == 0)
     return Time();  // Preserve 0 so we can tell it doesn't exist.
   return Time((tt * kMicrosecondsPerSecond) + kTimeTToMicrosecondsOffset);
 }
 
 time_t Time::ToTimeT() const {
   if (us_ == 0)
     return 0;  // Preserve 0 so we can tell it doesn't exist.
   return (us_ - kTimeTToMicrosecondsOffset) / kMicrosecondsPerSecond;
@@ skipping 77 matching lines @@
   return is_in_range(month, 1, 12) &&
          is_in_range(day_of_week, 0, 6) &&
          is_in_range(day_of_month, 1, 31) &&
          is_in_range(hour, 0, 23) &&
          is_in_range(minute, 0, 59) &&
          is_in_range(second, 0, 60) &&
          is_in_range(millisecond, 0, 999);
 }
 
 }  // namespace base