Rename webrtc/base -> webrtc/rtc_base

NOPRESUBMIT=True # cpplint errors that aren't caused by this CL.
NOTRY=True
NOTREECHECKS=True
TBR=kwiberg@webrtc.org, kjellander@webrtc.org

Bug: webrtc:7634
Change-Id: I3cca0fbaa807b563c95979cccd6d1bec32055f36
Reviewed-on: https://chromium-review.googlesource.com/562156
Commit-Queue: Edward Lemur <ehmaldonado@webrtc.org>
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#18919}
diff --git a/webrtc/modules/audio_processing/include/audio_processing.h b/webrtc/modules/audio_processing/include/audio_processing.h
index 05be5fe..4c4bc2f 100644
--- a/webrtc/modules/audio_processing/include/audio_processing.h
+++ b/webrtc/modules/audio_processing/include/audio_processing.h
@@ -19,11 +19,11 @@
 #include <stdio.h>  // FILE
 #include <vector>
 
-#include "webrtc/base/arraysize.h"
-#include "webrtc/base/platform_file.h"
-#include "webrtc/base/refcount.h"
 #include "webrtc/modules/audio_processing/beamformer/array_util.h"
 #include "webrtc/modules/audio_processing/include/config.h"
+#include "webrtc/rtc_base/arraysize.h"
+#include "webrtc/rtc_base/platform_file.h"
+#include "webrtc/rtc_base/refcount.h"
 #include "webrtc/typedefs.h"
 
 namespace webrtc {