Move over to ABSL logging and flags.

Removes gperftools too since that wants gflags.

Here come the fireworks.

Change-Id: I79cb7bcf60f1047fbfa28bfffc21a0fd692e4b1c
Signed-off-by: Austin Schuh <austin.linux@gmail.com>
diff --git a/aos/network/timestamp_channel.h b/aos/network/timestamp_channel.h
index 7e48a00..0d57c82 100644
--- a/aos/network/timestamp_channel.h
+++ b/aos/network/timestamp_channel.h
@@ -5,7 +5,8 @@
 #include <vector>
 
 #include "absl/container/btree_map.h"
-#include "glog/logging.h"
+#include "absl/log/check.h"
+#include "absl/log/log.h"
 
 #include "aos/configuration.h"
 #include "aos/events/event_loop.h"