Remove #include of rtc_stream_config.h from rtc_event_log.h

StreamConfig is not integral to RTC-event logging in general, but rather to specific events. Therefore, the dependency on it should not be exported through rtc_event_log.h.

BUG=webrtc:8111
TBR=stefan@webrtc.org

Change-Id: I1ece0830cd05fd12220c8c717490e15942bacec9
Reviewed-on: https://webrtc-review.googlesource.com/1238
Commit-Queue: Elad Alon <eladalon@webrtc.org>
Reviewed-by: Björn Terelius <terelius@webrtc.org>
Reviewed-by: Elad Alon <eladalon@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#19911}
diff --git a/call/call.cc b/call/call.cc
index 102df03..1bfde2e 100644
--- a/call/call.cc
+++ b/call/call.cc
@@ -28,6 +28,7 @@
 #include "call/rtp_stream_receiver_controller.h"
 #include "call/rtp_transport_controller_send.h"
 #include "logging/rtc_event_log/rtc_event_log.h"
+#include "logging/rtc_event_log/rtc_stream_config.h"
 #include "modules/bitrate_controller/include/bitrate_controller.h"
 #include "modules/congestion_controller/include/receive_side_congestion_controller.h"
 #include "modules/rtp_rtcp/include/flexfec_receiver.h"