Add some missing includes and dependencies.

In particular, time_utils.h is currently pulled in via rtc_event.h
This CL is in preparation of moving parts of the RTC event log to api/.

Bug: webrtc:10206
Change-Id: Idd35aa9404afded4d29b1296344996c45b8c2e91
Reviewed-on: https://webrtc-review.googlesource.com/c/117921
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Stefan Holmer <stefan@webrtc.org>
Commit-Queue: Björn Terelius <terelius@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#26326}

modules/audio_coding/BUILD.gn

@@ -2042,6 +2042,7 @@ if (rtc_include_tests) {
       "../../rtc_base:rtc_base_approved",
       "../../rtc_base:rtc_base_tests_utils",
       "../../rtc_base:sanitizer",
+      "../../rtc_base:timeutils",
       "../../rtc_base/system:arch",
       "../../system_wrappers",
       "../../system_wrappers:cpu_features_api",

modules/audio_coding/audio_network_adaptor/event_log_writer_unittest.cc

@@ -13,6 +13,7 @@
 #include "logging/rtc_event_log/events/rtc_event_audio_network_adaptation.h"
 #include "logging/rtc_event_log/mock/mock_rtc_event_log.h"
 #include "modules/audio_coding/audio_network_adaptor/event_log_writer.h"
+#include "rtc_base/checks.h"
 #include "test/gtest.h"
 
 namespace webrtc {