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/analysis/BUILD b/aos/analysis/BUILD
index 85f8783..7f1f038 100644
--- a/aos/analysis/BUILD
+++ b/aos/analysis/BUILD
@@ -18,7 +18,8 @@
         "//aos/events:simulated_event_loop",
         "//aos/events/logging:log_reader",
         "//third_party/python",
-        "@com_github_google_glog//:glog",
+        "@com_google_absl//absl/log",
+        "@com_google_absl//absl/log:check",
     ],
 )
 
diff --git a/aos/analysis/in_process_plotter.cc b/aos/analysis/in_process_plotter.cc
index 6c45389..437c71e 100644
--- a/aos/analysis/in_process_plotter.cc
+++ b/aos/analysis/in_process_plotter.cc
@@ -3,9 +3,10 @@
 #include <algorithm>
 #include <ostream>
 
+#include "absl/log/check.h"
+#include "absl/log/log.h"
 #include "flatbuffers/flatbuffer_builder.h"
 #include "flatbuffers/vector.h"
-#include "glog/logging.h"
 
 #include "aos/configuration.h"
 
diff --git a/aos/analysis/local_foxglove.cc b/aos/analysis/local_foxglove.cc
index b07a628..e30f150 100644
--- a/aos/analysis/local_foxglove.cc
+++ b/aos/analysis/local_foxglove.cc
@@ -1,6 +1,6 @@
 #include <memory>
 
-#include "gflags/gflags.h"
+#include "absl/flags/flag.h"
 
 #include "aos/init.h"
 #include "aos/seasocks/seasocks_logger.h"
@@ -8,9 +8,9 @@
 #include "seasocks/Logger.h"
 #include "seasocks/Server.h"
 
-DEFINE_string(data_path, "external/foxglove_studio",
-              "Path to foxglove studio files to serve.");
-DEFINE_uint32(port, 8000, "Port to serve files at.");
+ABSL_FLAG(std::string, data_path, "external/foxglove_studio",
+          "Path to foxglove studio files to serve.");
+ABSL_FLAG(uint32_t, port, 8000, "Port to serve files at.");
 
 int main(int argc, char *argv[]) {
   aos::InitGoogle(&argc, &argv);
@@ -18,5 +18,6 @@
   findEmbeddedContent("");
   ::seasocks::Server server(std::make_shared<aos::seasocks::SeasocksLogger>(
       ::seasocks::Logger::Level::Info));
-  server.serve(FLAGS_data_path.c_str(), FLAGS_port);
+  server.serve(absl::GetFlag(FLAGS_data_path).c_str(),
+               absl::GetFlag(FLAGS_port));
 }
diff --git a/aos/analysis/py_log_reader.cc b/aos/analysis/py_log_reader.cc
index c190acb..19b0855 100644
--- a/aos/analysis/py_log_reader.cc
+++ b/aos/analysis/py_log_reader.cc
@@ -26,8 +26,9 @@
 #include <string>
 #include <vector>
 
+#include "absl/log/check.h"
+#include "absl/log/log.h"
 #include "absl/types/span.h"
-#include "glog/logging.h"
 
 #include "aos/configuration.h"
 #include "aos/events/context.h"