Import of CCTZ from GitHub.

PiperOrigin-RevId: 544445872
Change-Id: Ic7d42dca3461babdf8a6dff4c73a1596e795ffb2
diff --git a/absl/time/internal/cctz/src/time_zone_info.cc b/absl/time/internal/cctz/src/time_zone_info.cc
index 4bc7b50..a3be655 100644
--- a/absl/time/internal/cctz/src/time_zone_info.cc
+++ b/absl/time/internal/cctz/src/time_zone_info.cc
@@ -45,6 +45,7 @@
 #include <sstream>
 #include <string>
 #include <utility>
+#include <vector>
 
 #include "absl/base/config.h"
 #include "absl/time/internal/cctz/include/cctz/civil_time.h"
diff --git a/absl/time/internal/cctz/src/time_zone_libc.h b/absl/time/internal/cctz/src/time_zone_libc.h
index 2d6fa68..ae21073 100644
--- a/absl/time/internal/cctz/src/time_zone_libc.h
+++ b/absl/time/internal/cctz/src/time_zone_libc.h
@@ -15,6 +15,7 @@
 #ifndef ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_LIBC_H_
 #define ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_LIBC_H_
 
+#include <memory>
 #include <string>
 
 #include "absl/base/config.h"