Prepare for splitting FrameType into AudioFrameType and VideoFrameType

This cl deprecates the FrameType enum, and adds aliases AudioFrameType
and VideoFrameType.

After downstream usage is updated, the enums will be separated
and be moved out of common_types.h.

Bug: webrtc:6883
Change-Id: I2aaf660169da45f22574b4cbb16aea8522cc07a6
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/123184
Commit-Queue: Niels Moller <nisse@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#27011}
diff --git a/modules/video_coding/fec_controller_default.cc b/modules/video_coding/fec_controller_default.cc
index 3bceecc..4502f2c 100644
--- a/modules/video_coding/fec_controller_default.cc
+++ b/modules/video_coding/fec_controller_default.cc
@@ -177,7 +177,7 @@
 }
 void FecControllerDefault::UpdateWithEncodedData(
     const size_t encoded_image_length,
-    const FrameType encoded_image_frametype) {
+    const VideoFrameType encoded_image_frametype) {
   const size_t encoded_length = encoded_image_length;
   CritScope lock(&crit_sect_);
   if (encoded_length > 0) {