Reland: Change the video color space default.

media/ffmpeg/ffmpeg_common.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_FFMPEG_FFMPEG_COMMON_H_
 #define MEDIA_FFMPEG_FFMPEG_COMMON_H_
 
 // Used for FFmpeg error codes.
 #include <cerrno>
 
@@ skipping 106 matching lines @@
 MEDIA_EXPORT SampleFormat
     AVSampleFormatToSampleFormat(AVSampleFormat sample_format);
 
 // Converts FFmpeg's pixel formats to its corresponding supported video format.
 MEDIA_EXPORT VideoPixelFormat
 PixelFormatToVideoPixelFormat(PixelFormat pixel_format);
 
 // Converts video formats to its corresponding FFmpeg's pixel formats.
 PixelFormat VideoPixelFormatToPixelFormat(VideoPixelFormat video_format);
 
+ColorSpace AVColorSpaceToColorSpace(AVColorSpace color_space);
+
 // Convert FFmpeg UTC representation (YYYY-MM-DD HH:MM:SS) to base::Time.
 // Returns true and sets |*out| if |date_utc| contains a valid
 // date string. Otherwise returns fals and timeline_offset is unmodified.
 MEDIA_EXPORT bool FFmpegUTCDateToTime(const char* date_utc, base::Time* out);
 
 }  // namespace media
 
 #endif  // MEDIA_FFMPEG_FFMPEG_COMMON_H_