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/audio_coding/acm2/acm_resampler.cc b/webrtc/modules/audio_coding/acm2/acm_resampler.cc
index 555263a..da0d2e5 100644
--- a/webrtc/modules/audio_coding/acm2/acm_resampler.cc
+++ b/webrtc/modules/audio_coding/acm2/acm_resampler.cc
@@ -14,7 +14,7 @@
 #include <string.h>
 
 #include "webrtc/common_audio/resampler/include/resampler.h"
-#include "webrtc/rtc_base/logging.h"
+#include "webrtc/base/logging.h"
 
 namespace webrtc {
 namespace acm2 {