Move VideoCodecType from common_types.h to api/video/video_codec_type.h

Bug: webrtc:7660
Change-Id: I9381364a64113dbb622b26acbf2b71228c3c4b96
Reviewed-on: https://webrtc-review.googlesource.com/c/111480
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Commit-Queue: Niels Moller <nisse@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#25710}
diff --git a/api/video_codecs/video_codec.h b/api/video_codecs/video_codec.h
index 95a1d84..9fba60c 100644
--- a/api/video_codecs/video_codec.h
+++ b/api/video_codecs/video_codec.h
@@ -16,6 +16,7 @@
 #include <string>
 
 #include "api/video/video_bitrate_allocation.h"
+#include "api/video/video_codec_type.h"
 #include "common_types.h"  // NOLINT(build/include)
 #include "rtc_base/system/rtc_export.h"