QUIC - (no behavior change) s/NULL/nullptr/g in .../quic/...

net/quic/crypto/channel_id.h

Index: net/quic/crypto/channel_id.h
diff --git a/net/quic/crypto/channel_id.h b/net/quic/crypto/channel_id.h
index 7d29932406ba018bfeae7c886dd503157ee8f070..bd335fb0c90d81d058ef2e9d866449b376972404 100644
--- a/net/quic/crypto/channel_id.h
+++ b/net/quic/crypto/channel_id.h
@@ -36,7 +36,7 @@ class ChannelIDSourceCallback {
   virtual ~ChannelIDSourceCallback() {}
 
   // Run is called on the original thread to mark the completion of an
-  // asynchonous GetChannelIDKey operation. If |*channel_id_key| is not NULL
+  // asynchonous GetChannelIDKey operation. If |*channel_id_key| is not nullptr
   // then the channel ID lookup is successful. |Run| may take ownership of
   // |*channel_id_key| by calling |release| on it.
   virtual void Run(scoped_ptr<ChannelIDKey>* channel_id_key) = 0;