Remove system_wrappers/interface/trace_event.h

BUG=

Review URL: https://codereview.webrtc.org/1417773002

Cr-Commit-Position: refs/heads/master@{#10346}
diff --git a/webrtc/video_engine/vie_encoder.cc b/webrtc/video_engine/vie_encoder.cc
index 340a78e..761df33 100644
--- a/webrtc/video_engine/vie_encoder.cc
+++ b/webrtc/video_engine/vie_encoder.cc
@@ -15,6 +15,7 @@
 #include <algorithm>
 
 #include "webrtc/base/checks.h"
+#include "webrtc/base/trace_event.h"
 #include "webrtc/common_video/interface/video_image.h"
 #include "webrtc/common_video/libyuv/include/webrtc_libyuv.h"
 #include "webrtc/frame_callback.h"
@@ -30,7 +31,6 @@
 #include "webrtc/system_wrappers/interface/logging.h"
 #include "webrtc/system_wrappers/interface/metrics.h"
 #include "webrtc/system_wrappers/interface/tick_util.h"
-#include "webrtc/system_wrappers/interface/trace_event.h"
 #include "webrtc/video/send_statistics_proxy.h"
 #include "webrtc/video_engine/payload_router.h"
 #include "webrtc/video_engine/vie_defines.h"