Revert of Change the video color space default.

media/mojo/interfaces/media_types.mojom

Index: media/mojo/interfaces/media_types.mojom
diff --git a/media/mojo/interfaces/media_types.mojom b/media/mojo/interfaces/media_types.mojom
index 6944a3a3ac1c314b074dde5b366b6063733f161f..ff87cec727fb8e920b50fb570c97c69afa26423d 100644
--- a/media/mojo/interfaces/media_types.mojom
+++ b/media/mojo/interfaces/media_types.mojom
@@ -104,15 +104,6 @@
   FORMAT_MAX = XRGB,
 };
 
-// Kept in sync with media::VideoFrame::ColorSpace via static_asserts.
-enum ColorSpace {
-  UNSPECIFIED = 0,
-  JPEG = 1,
-  HD_REC709 = 2,
-  SD_REC601 = 3,
-  MAX = SD_REC601,
-};
-
 // See media/base/video_decoder_config.h for descriptions.
 // Kept in sync with media::VideoCodec via static_asserts.
 enum VideoCodec {
@@ -173,7 +164,6 @@
   VideoCodec codec;
   VideoCodecProfile profile;
   VideoFormat format;
-  ColorSpace color_space;
   Size coded_size;
   Rect visible_rect;
   Size natural_size;