Revert of Implement support for vp9 in ISO-BMFF

media/formats/mp4/mp4_stream_parser.cc

Index: media/formats/mp4/mp4_stream_parser.cc
diff --git a/media/formats/mp4/mp4_stream_parser.cc b/media/formats/mp4/mp4_stream_parser.cc
index dbd736df941a6542415faa81490e0bb290ec448f..d248bad35656937158f6bd57f6499791abc27f4b 100644
--- a/media/formats/mp4/mp4_stream_parser.cc
+++ b/media/formats/mp4/mp4_stream_parser.cc
@@ -549,16 +549,13 @@
 
   std::vector<uint8_t> frame_buf(buf, buf + runs_->sample_size());
   if (video) {
-    if (runs_->video_description().video_codec == kCodecH264 ||
-        runs_->video_description().video_codec == kCodecHEVC) {
-      DCHECK(runs_->video_description().frame_bitstream_converter);
-      if (!runs_->video_description().frame_bitstream_converter->ConvertFrame(
-              &frame_buf, runs_->is_keyframe(), &subsamples)) {
-        MEDIA_LOG(ERROR, media_log_)
-            << "Failed to prepare video sample for decode";
-        *err = true;
-        return false;
-      }
+    DCHECK(runs_->video_description().frame_bitstream_converter);
+    if (!runs_->video_description().frame_bitstream_converter->ConvertFrame(
+        &frame_buf, runs_->is_keyframe(), &subsamples)) {
+      MEDIA_LOG(ERROR, media_log_)
+          << "Failed to prepare video sample for decode";
+      *err = true;
+      return false;
     }
   }