Revert "Update includes for webrtc/{base => rtc_base} rename (2/3)"

webrtc/examples/unityplugin/simple_peer_connection.cc

Index: webrtc/examples/unityplugin/simple_peer_connection.cc
diff --git a/webrtc/examples/unityplugin/simple_peer_connection.cc b/webrtc/examples/unityplugin/simple_peer_connection.cc
index c302e9c433df9cd50df16b6b43b8daa558269b1d..ee959b7aab2e2427dff0cb6cde07536089fdd374 100644
--- a/webrtc/examples/unityplugin/simple_peer_connection.cc
+++ b/webrtc/examples/unityplugin/simple_peer_connection.cc
@@ -13,9 +13,9 @@
 #include <utility>
 
 #include "webrtc/api/test/fakeconstraints.h"
+#include "webrtc/base/json.h"
 #include "webrtc/media/engine/webrtcvideocapturerfactory.h"
 #include "webrtc/modules/video_capture/video_capture_factory.h"
-#include "webrtc/rtc_base/json.h"
 
 // Names used for a IceCandidate JSON object.
 const char kCandidateSdpMidName[] = "sdpMid";