Move class VideoCodec from common_types.h to its own api header file.

Bug: webrtc:7660
Change-Id: I91f19bfc2565461328f30081f8383e136419aefb
Reviewed-on: https://webrtc-review.googlesource.com/79881
Commit-Queue: Niels Moller <nisse@webrtc.org>
Reviewed-by: Rasmus Brandt <brandtr@webrtc.org>
Reviewed-by: Danil Chapovalov <danilchap@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23544}
diff --git a/test/encoder_settings.cc b/test/encoder_settings.cc
index 33e81b0..c0f23f3 100644
--- a/test/encoder_settings.cc
+++ b/test/encoder_settings.cc
@@ -41,10 +41,10 @@
   int bitrate_left_bps = encoder_config.max_bitrate_bps;
 
   for (size_t i = 0; i < encoder_config.number_of_streams; ++i) {
-    stream_settings[i].width =
-        (i + 1) * width / encoder_config.number_of_streams;
-    stream_settings[i].height =
-        (i + 1) * height / encoder_config.number_of_streams;
+    stream_settings[i].width = static_cast<int>(
+        (i + 1) * width / encoder_config.number_of_streams);
+    stream_settings[i].height = static_cast<int>(
+        (i + 1) * height / encoder_config.number_of_streams);
     stream_settings[i].max_framerate = 30;
     stream_settings[i].min_bitrate_bps =
         DefaultVideoStreamFactory::kDefaultMinBitratePerStream[i];