Fix Mojo IPC for HDR metadata

media/mojo/interfaces/hdr_metadata_struct_traits.h

Index: media/mojo/interfaces/hdr_metadata_struct_traits.h
diff --git a/media/mojo/interfaces/hdr_metadata_struct_traits.h b/media/mojo/interfaces/hdr_metadata_struct_traits.h
index 498f8302af355c558fb396ba52f853ee4ae65126..6ca3810ea499c6e081baf6be20679c5580985eeb 100644
--- a/media/mojo/interfaces/hdr_metadata_struct_traits.h
+++ b/media/mojo/interfaces/hdr_metadata_struct_traits.h
@@ -36,6 +36,14 @@ struct StructTraits<media::mojom::MasteringMetadataDataView,
                    media::MasteringMetadata* output) {
     output->luminance_max = data.luminance_max();
     output->luminance_min = data.luminance_min();
+    if (!data.ReadPrimaryR(&output->primary_r))
+      return false;
+    if (!data.ReadPrimaryG(&output->primary_g))
+      return false;
+    if (!data.ReadPrimaryB(&output->primary_b))
+      return false;
+    if (!data.ReadWhitePoint(&output->white_point))
+      return false;
     return true;
   }
 };
@@ -59,6 +67,8 @@ struct StructTraits<media::mojom::HDRMetadataDataView, media::HDRMetadata> {
     output->max_content_light_level = data.max_content_light_level();
     output->max_frame_average_light_level =
         data.max_frame_average_light_level();
+    if (!data.ReadMasteringMetadata(&output->mastering_metadata))
+      return false;
     return true;
   }
 };