Call QuicAlarm::IsSet instead of looking at deadline_ directly, rename some variables for readabili…

net/quic/quic_alarm.h

Index: net/quic/quic_alarm.h
diff --git a/net/quic/quic_alarm.h b/net/quic/quic_alarm.h
index a775cfb523968f72e95b72981643c45552c7f5b0..9bd7279e7b760bcaa83ed0dc562d2544ad3eefed 100644
--- a/net/quic/quic_alarm.h
+++ b/net/quic/quic_alarm.h
@@ -36,7 +36,7 @@ class NET_EXPORT_PRIVATE QuicAlarm {
   // Sets the alarm to fire at |deadline|.  Must not be called while
   // the alarm is set.  To reschedule an alarm, call Cancel() first,
   // then Set().
-  void Set(QuicTime deadline);
+  void Set(QuicTime new_deadline);
 
   // Cancels the alarm.  May be called repeatedly.  Does not
   // guarantee that the underlying scheduling system will remove
@@ -47,8 +47,9 @@ class NET_EXPORT_PRIVATE QuicAlarm {
   // Cancels and sets the alarm if the |deadline| is farther from the current
   // deadline than |granularity|, and otherwise does nothing.  If |deadline| is
   // not initialized, the alarm is cancelled.
-  void Update(QuicTime deadline, QuicTime::Delta granularity);
+  void Update(QuicTime new_deadline, QuicTime::Delta granularity);
 
+  // Returns true if |deadline_| has been set to a non-zero time.
   bool IsSet() const;
 
   QuicTime deadline() const { return deadline_; }