Reland "Add base::TimeDelta::Max()"

sync/sessions/nudge_tracker.cc

 // Copyright (c) 2013 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 "sync/sessions/nudge_tracker.h"
 
 #include "base/basictypes.h"
 #include "sync/internal_api/public/base/invalidation.h"
 #include "sync/notifier/invalidation_util.h"
 #include "sync/notifier/object_id_invalidation_map.h"
@@ skipping 174 matching lines @@
 }
 
 bool NudgeTracker::IsTypeThrottled(ModelType type) const {
   DCHECK(type_trackers_.find(type) != type_trackers_.end());
   return type_trackers_.find(type)->second.IsThrottled();
 }
 
 base::TimeDelta NudgeTracker::GetTimeUntilNextUnthrottle(
     base::TimeTicks now) const {
   DCHECK(IsAnyTypeThrottled()) << "This function requires a pending unthrottle";
-  const base::TimeDelta kMaxTimeDelta =
-      base::TimeDelta::FromInternalValue(kint64max);
 
   // Return min of GetTimeUntilUnthrottle() values for all IsThrottled() types.
-  base::TimeDelta time_until_next_unthrottle = kMaxTimeDelta;
+  base::TimeDelta time_until_next_unthrottle = base::TimeDelta::Max();
   for (TypeTrackerMap::const_iterator it = type_trackers_.begin();
        it != type_trackers_.end(); ++it) {
     if (it->second.IsThrottled()) {
       time_until_next_unthrottle =
           std::min(time_until_next_unthrottle,
                    it->second.GetTimeUntilUnthrottle(now));
     }
   }
-  DCHECK(kMaxTimeDelta != time_until_next_unthrottle);
+  DCHECK(!time_until_next_unthrottle.is_max());
 
   return time_until_next_unthrottle;
 }
 
 ModelTypeSet NudgeTracker::GetThrottledTypes() const {
   ModelTypeSet result;
   for (TypeTrackerMap::const_iterator it = type_trackers_.begin();
        it != type_trackers_.end(); ++it) {
     if (it->second.IsThrottled()) {
       result.Put(it->first);
@@ skipping 55 matching lines @@
     it->second.UpdatePayloadBufferSize(size);
   }
 }
 
 void NudgeTracker::SetNextRetryTime(base::TimeTicks retry_time) {
   next_retry_time_ = retry_time;
 }
 
 }  // namespace sessions
 }  // namespace syncer