Revert "Update includes for webrtc/{base => rtc_base} rename (1/3)"

webrtc/modules/audio_processing/aec3/main_filter_update_gain.cc

Index: webrtc/modules/audio_processing/aec3/main_filter_update_gain.cc
diff --git a/webrtc/modules/audio_processing/aec3/main_filter_update_gain.cc b/webrtc/modules/audio_processing/aec3/main_filter_update_gain.cc
index 75254ba4923c964112a317069a11c4da4f30515e..3c4959c11c59d40124576bf02217bd181381d714 100644
--- a/webrtc/modules/audio_processing/aec3/main_filter_update_gain.cc
+++ b/webrtc/modules/audio_processing/aec3/main_filter_update_gain.cc
@@ -13,10 +13,10 @@
 #include <algorithm>
 #include <functional>
 
+#include "webrtc/base/atomicops.h"
+#include "webrtc/base/checks.h"
 #include "webrtc/modules/audio_processing/aec3/aec3_common.h"
 #include "webrtc/modules/audio_processing/logging/apm_data_dumper.h"
-#include "webrtc/rtc_base/atomicops.h"
-#include "webrtc/rtc_base/checks.h"
 
 namespace webrtc {
 namespace {