Delete DecodedImageCallback::ReceivedDecodedFrame

This was a companion method to ReceivedDecodedReferenceFrame, deleted
in https://webrtc-review.googlesource.com/c/src/+/133348.

Tbr: kwiberg@webrtc.org # Mock class update
Bug: webrtc:7408
Change-Id: I429f5f5c18f14c27136e82860297107a82c81d13
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/133571
Commit-Queue: Niels Moller <nisse@webrtc.org>
Reviewed-by: Åsa Persson <asapersson@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#27754}
diff --git a/modules/video_coding/generic_decoder.cc b/modules/video_coding/generic_decoder.cc
index c8085bb..cf986d6 100644
--- a/modules/video_coding/generic_decoder.cc
+++ b/modules/video_coding/generic_decoder.cc
@@ -25,10 +25,7 @@
 
 VCMDecodedFrameCallback::VCMDecodedFrameCallback(VCMTiming* timing,
                                                  Clock* clock)
-    : _clock(clock),
-      _timing(timing),
-      _timestampMap(kDecoderFrameMemoryLength),
-      _lastReceivedPictureID(0) {
+    : _clock(clock), _timing(timing), _timestampMap(kDecoderFrameMemoryLength) {
   ntp_offset_ =
       _clock->CurrentNtpInMilliseconds() - _clock->TimeInMilliseconds();
 }
@@ -147,16 +144,6 @@
   _receiveCallback->FrameToRender(decodedImage, qp, frameInfo->content_type);
 }
 
-int32_t VCMDecodedFrameCallback::ReceivedDecodedFrame(
-    const uint64_t pictureId) {
-  _lastReceivedPictureID = pictureId;
-  return 0;
-}
-
-uint64_t VCMDecodedFrameCallback::LastReceivedPictureID() const {
-  return _lastReceivedPictureID;
-}
-
 void VCMDecodedFrameCallback::OnDecoderImplementationName(
     const char* implementation_name) {
   _receiveCallback->OnDecoderImplementationName(implementation_name);