Revert "Delete RtpPayloadParams::SetDependenciesVp8Deprecated as unused"

This reverts commit dc7fe40f497179721e53af1b3ece37c741bb757e.

Reason for revert: speculative revert for breaking downstream projects

Original change's description:
> Delete RtpPayloadParams::SetDependenciesVp8Deprecated as unused
> 
> Bug: webrtc:10242
> Change-Id: Iddad086d8ce3652bd9f0fb12788d5c73b5ebda76
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/161945
> Reviewed-by: Niels Moller <nisse@webrtc.org>
> Reviewed-by: Philip Eliasson <philipel@webrtc.org>
> Reviewed-by: Elad Alon <eladalon@webrtc.org>
> Commit-Queue: Danil Chapovalov <danilchap@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#30159}

TBR=danilchap@webrtc.org,eladalon@webrtc.org,nisse@webrtc.org,philipel@webrtc.org

Change-Id: Ie7f875291610a7b676539a5ccc4bac9a08011f42
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: webrtc:10242
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/165240
Reviewed-by: Qingsi Wang <qingsi@webrtc.org>
Commit-Queue: Qingsi Wang <qingsi@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#30173}
diff --git a/modules/video_coding/include/video_codec_interface.h b/modules/video_coding/include/video_codec_interface.h
index 93f45c9..54839e1 100644
--- a/modules/video_coding/include/video_codec_interface.h
+++ b/modules/video_coding/include/video_codec_interface.h
@@ -22,7 +22,6 @@
 #include "modules/video_coding/codecs/h264/include/h264_globals.h"
 #include "modules/video_coding/codecs/vp9/include/vp9_globals.h"
 #include "modules/video_coding/include/video_error_codes.h"
-#include "rtc_base/deprecation.h"
 #include "rtc_base/system/rtc_export.h"
 
 namespace webrtc {
@@ -42,9 +41,9 @@
   // codec buffers, but the exact mapping (i.e. whether 0 refers to Last,
   // to Golden or to Arf) is not pre-determined.
   // More references may be specified than are strictly necessary, but not less.
-  // TODO(bugs.webrtc.org/10242): Remove |useExplicitDependencies| when not set
-  // by downstream projects.
-  RTC_DEPRECATED bool useExplicitDependencies;
+  // TODO(bugs.webrtc.org/10242): Remove |useExplicitDependencies| once all
+  // encoder-wrappers are updated.
+  bool useExplicitDependencies;
   static constexpr size_t kBuffersCount = 3;
   size_t referencedBuffers[kBuffersCount];
   size_t referencedBuffersCount;