Move VideoEncoderConfig from call/ to api/.

Bug: webrtc:8830
Change-Id: I42abd45bff9a70fe00733424b34874925c523dc8
Reviewed-on: https://webrtc-review.googlesource.com/77683
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Reviewed-by: Stefan Holmer <stefan@webrtc.org>
Commit-Queue: Niels Moller <nisse@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23303}

modules/video_coding/BUILD.gn

@@ -145,7 +145,6 @@ rtc_static_library("video_coding") {
     "../../api/video:video_frame",
     "../../api/video:video_frame_i420",
     "../../api/video_codecs:video_codecs_api",
-    "../../call:video_stream_api",
     "../../common_video",
     "../../rtc_base:checks",
     "../../rtc_base:rtc_base",

modules/video_coding/include/video_codec_initializer.h

@@ -15,7 +15,7 @@
 #include <string>
 #include <vector>
 
-#include "call/video_config.h"
+#include "api/video_codecs/video_encoder_config.h"
 
 namespace webrtc {