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

webrtc/rtc_base/flags.cc

Index: webrtc/rtc_base/flags.cc
diff --git a/webrtc/rtc_base/flags.cc b/webrtc/rtc_base/flags.cc
index 19d2f827fdcacec86a2d79e0eb512e5a6fa4c1e0..9b7177c22c15dd28f75c8b2076349fcb76c3983e 100644
--- a/webrtc/rtc_base/flags.cc
+++ b/webrtc/rtc_base/flags.cc
@@ -8,17 +8,17 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#include "webrtc/rtc_base/flags.h"
+#include "webrtc/base/flags.h"
 
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
-#include "webrtc/rtc_base/checks.h"
+#include "webrtc/base/checks.h"
 
 #if defined(WEBRTC_WIN)
+#include "webrtc/base/win32.h"
 #include <shellapi.h>
-#include "webrtc/rtc_base/win32.h"
 #endif
 
 namespace rtc {