Move EventWrapper class to target video_coding_legacy.

And remove some unneeded logic for WEBRTC_EVENT_INFINITE.

Bug: webrtc:3380
Change-Id: Ibf632493edc6ced1609bd9ced44c2020fe9878cf
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/169846
Reviewed-by: Philip Eliasson <philipel@webrtc.org>
Commit-Queue: Niels Moller <nisse@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#30700}
diff --git a/modules/video_coding/receiver.h b/modules/video_coding/receiver.h
index a3033e6..64a157f 100644
--- a/modules/video_coding/receiver.h
+++ b/modules/video_coding/receiver.h
@@ -14,13 +14,13 @@
 #include <memory>
 #include <vector>
 
+#include "modules/video_coding/event_wrapper.h"
 #include "modules/video_coding/include/video_coding.h"
 #include "modules/video_coding/include/video_coding_defines.h"
 #include "modules/video_coding/jitter_buffer.h"
 #include "modules/video_coding/packet.h"
 #include "modules/video_coding/timing.h"
 #include "rtc_base/critical_section.h"
-#include "system_wrappers/include/event_wrapper.h"
 
 namespace webrtc {