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

This reverts commit c8fa692ec44fd6ba4fa3d085ac3161a262fc18c5.

BUG=webrtc:7634
NOTRY=True
NOPRESUBMIT=True

Review-Url: https://codereview.webrtc.org/2964773002 .
Cr-Commit-Position: refs/heads/master@{#18872}
diff --git a/webrtc/modules/bitrate_controller/bitrate_controller_impl.h b/webrtc/modules/bitrate_controller/bitrate_controller_impl.h
index 11a5850..ff27153 100644
--- a/webrtc/modules/bitrate_controller/bitrate_controller_impl.h
+++ b/webrtc/modules/bitrate_controller/bitrate_controller_impl.h
@@ -22,9 +22,9 @@
 #include <utility>
 #include <vector>
 
+#include "webrtc/base/constructormagic.h"
+#include "webrtc/base/criticalsection.h"
 #include "webrtc/modules/bitrate_controller/send_side_bandwidth_estimation.h"
-#include "webrtc/rtc_base/constructormagic.h"
-#include "webrtc/rtc_base/criticalsection.h"
 
 namespace webrtc {