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/logging/context.cc b/aos/logging/context.cc
index 00b7f3c..66ece05 100644
--- a/aos/logging/context.cc
+++ b/aos/logging/context.cc
@@ -21,7 +21,8 @@
 extern char *program_invocation_name;
 extern char *program_invocation_short_name;
 
-#include "glog/logging.h"
+#include "absl/log/check.h"
+#include "absl/log/log.h"
 
 namespace aos::logging::internal {
 namespace {