Update to Pipeline Metadata and Decoder Stream for Orientation Data

media/ffmpeg/ffmpeg_common.cc

Index: media/ffmpeg/ffmpeg_common.cc
diff --git a/media/ffmpeg/ffmpeg_common.cc b/media/ffmpeg/ffmpeg_common.cc
index 42642fbfbecd917c185699e0cc4c95066974b0cf..5e7f706c59a9068ddd476a717e05e6960f8426cc 100644
--- a/media/ffmpeg/ffmpeg_common.cc
+++ b/media/ffmpeg/ffmpeg_common.cc
@@ -411,6 +411,16 @@ void AVStreamToVideoDecoderConfig(
   if (key)
     is_encrypted = true;
 
+  AVDictionaryEntry* rotation_entry =
+      av_dict_get(stream->metadata, "rotate", NULL, 0);
+  int rotation = 0;
+  if (rotation_entry && rotation_entry->value && rotation_entry->value[0])
+    base::StringToInt(rotation_entry->value, &rotation);
+
+  DCHECK(rotation == 0 || rotation == 90 || rotation == 180 || rotation == 270);
+  if (rotation != 90 && rotation != 180 && rotation != 270)
+    rotation = 0;
+
   AVDictionaryEntry* webm_alpha =
       av_dict_get(stream->metadata, "alpha_mode", NULL, 0);
   if (webm_alpha && !strcmp(webm_alpha->value, "1")) {
@@ -424,6 +434,8 @@ void AVStreamToVideoDecoderConfig(
                      stream->codec->extradata, stream->codec->extradata_size,
                      is_encrypted,
                      record_stats);
+
+  config->set_rotation(rotation);
 }
 
 void VideoDecoderConfigToAVCodecContext(