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

This reverts commit https://codereview.webrtc.org/2963273002/
where the git cl format breaks include order on Windows.

BUG=webrtc:7634
NOTRY=True
TBR=kwiberg@webrtc.org

Review-Url: https://codereview.webrtc.org/2962303003 .
Cr-Commit-Position: refs/heads/master@{#18857}
diff --git a/webrtc/rtc_base/bytebuffer.h b/webrtc/rtc_base/bytebuffer.h
index 36b18d2..b631ae1 100644
--- a/webrtc/rtc_base/bytebuffer.h
+++ b/webrtc/rtc_base/bytebuffer.h
@@ -13,9 +13,9 @@
 
 #include <string>
 
-#include "webrtc/rtc_base/basictypes.h"
-#include "webrtc/rtc_base/buffer.h"
-#include "webrtc/rtc_base/constructormagic.h"
+#include "webrtc/base/basictypes.h"
+#include "webrtc/base/buffer.h"
+#include "webrtc/base/constructormagic.h"
 
 namespace rtc {