FFmpegDemuxer: Clear |extra_data| when enabling bitstream conversion.

media/base/video_decoder_config.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MEDIA_BASE_VIDEO_DECODER_CONFIG_H_
 #define MEDIA_BASE_VIDEO_DECODER_CONFIG_H_
 
 #include <stdint.h>
 
 #include <string>
@@ skipping 81 matching lines @@
 
   // Region of |coded_size_| that is visible.
   gfx::Rect visible_rect() const { return visible_rect_; }
 
   // Final visible width and height of a video frame with aspect ratio taken
   // into account.
   gfx::Size natural_size() const { return natural_size_; }
 
   // Optional byte data required to initialize video decoders, such as H.264
   // AVCC data.
+  void SetExtraData(const std::vector<uint8_t>& extra_data);
   const std::vector<uint8_t>& extra_data() const { return extra_data_; }
 
   // Whether the video stream is potentially encrypted.
   // Note that in a potentially encrypted video stream, individual buffers
   // can be encrypted or not encrypted.
   bool is_encrypted() const { return encryption_scheme_.is_encrypted(); }
 
   // Encryption scheme used for encrypted buffers.
   const EncryptionScheme& encryption_scheme() const {
     return encryption_scheme_;
@@ skipping 26 matching lines @@
   base::Optional<HDRMetadata> hdr_metadata_;
 
   // Not using DISALLOW_COPY_AND_ASSIGN here intentionally to allow the compiler
   // generated copy constructor and assignment operator. Since the extra data is
   // typically small, the performance impact is minimal.
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_VIDEO_DECODER_CONFIG_H_