Reland of Declare VideoCodec.codec_specific_info private

webrtc/api/android/jni/androidmediaencoder_jni.cc

Index: webrtc/api/android/jni/androidmediaencoder_jni.cc
diff --git a/webrtc/api/android/jni/androidmediaencoder_jni.cc b/webrtc/api/android/jni/androidmediaencoder_jni.cc
index 177cd9bfb9b7ed69ccbe51ede545cc94fc104037..6fcb0fbe3609441f5bac643d25d5c6f152241db3 100644
--- a/webrtc/api/android/jni/androidmediaencoder_jni.cc
+++ b/webrtc/api/android/jni/androidmediaencoder_jni.cc
@@ -405,7 +405,7 @@ int32_t MediaCodecVideoEncoder::InitEncode(
   // TODO(pbos): Extract automaticResizeOn out of VP8 settings.
   scale_ = false;
   if (codecType_ == kVideoCodecVP8) {
-    scale_ = codec_settings->codecSpecific.VP8.automaticResizeOn;
+    scale_ = codec_settings->VP8().automaticResizeOn;
   } else if (codecType_ != kVideoCodecVP9) {
     scale_ = true;
   }