Revert 253502 "Add base::TimeDelta::Max()."

> Add base::TimeDelta::Max().
> 
> TimeDelta::Max() is a maximum timedelta, larger than any timedelta you
> can compare it to. The results of adding it to a time, or another time
> delta are undefined.
> 
> R=ajwong@chromium.org,mkwst@chromium.org,jar@chromium.org
> TBR=jamesr@chomium.org,acolwell@chromium.org,nick@chromium.org
> BUG=None
> 
> Review URL: https://codereview.chromium.org/163413004

TBR=gavinp@chromium.org

Review URL: https://codereview.chromium.org/179763006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@253643 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 4 insertions, 2 deletions

diff --git a/sync/sessions/nudge_tracker.cc b/sync/sessions/nudge_tracker.cc
index b69d753..212500a 100644
--- a/sync/sessions/nudge_tracker.cc
+++ b/sync/sessions/nudge_tracker.cc
@@ -192,9 +192,11 @@ bool NudgeTracker::IsTypeThrottled(ModelType type) const {
 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 = base::TimeDelta::Max();
+  base::TimeDelta time_until_next_unthrottle = kMaxTimeDelta;
   for (TypeTrackerMap::const_iterator it = type_trackers_.begin();
        it != type_trackers_.end(); ++it) {
     if (it->second.IsThrottled()) {
@@ -203,7 +205,7 @@ base::TimeDelta NudgeTracker::GetTimeUntilNextUnthrottle(
                    it->second.GetTimeUntilUnthrottle(now));
     }
   }
-  DCHECK(!time_until_next_unthrottle.is_max());
+  DCHECK(kMaxTimeDelta != time_until_next_unthrottle);
 
   return time_until_next_unthrottle;
 }