Add color metadata info to VideoDecoderConfig.

media/base/video_decoder_config.h

Index: media/base/video_decoder_config.h
diff --git a/media/base/video_decoder_config.h b/media/base/video_decoder_config.h
index 50dee06534c3cab8c22ed0b208d69a8f3412e270..82a645f83c47ce0f8618ba01bfab12d0e6efd660 100644
--- a/media/base/video_decoder_config.h
+++ b/media/base/video_decoder_config.h
@@ -11,7 +11,9 @@
 #include <vector>
 
 #include "base/macros.h"
+#include "base/optional.h"
 #include "media/base/encryption_scheme.h"
+#include "media/base/hdr_metadata.h"
 #include "media/base/media_export.h"
 #include "media/base/video_codecs.h"
 #include "media/base/video_types.h"
@@ -108,6 +110,10 @@ class MEDIA_EXPORT VideoDecoderConfig {
     return encryption_scheme_;
   }
 
+  // Extended color metadata, including HDR metadata.
+  void SetColorMetadata(const ColorMetadata& color_metadata);
+  base::Optional<ColorMetadata> GetColorMetadata() const;
+
  private:
   VideoCodec codec_;
   VideoCodecProfile profile_;
@@ -123,6 +129,8 @@ class MEDIA_EXPORT VideoDecoderConfig {
 
   EncryptionScheme encryption_scheme_;
 
+  base::Optional<ColorMetadata> color_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.