Add mailbox-based Mojo VideoFrame variant.

media/mojo/services/mojo_video_decoder_service.h

Index: media/mojo/services/mojo_video_decoder_service.h
diff --git a/media/mojo/services/mojo_video_decoder_service.h b/media/mojo/services/mojo_video_decoder_service.h
index ce824eee56c76b9293fb7244705deb671068eb4f..a35869d4b2879b699ed8a3a6792f86bc5a671bcc 100644
--- a/media/mojo/services/mojo_video_decoder_service.h
+++ b/media/mojo/services/mojo_video_decoder_service.h
@@ -9,9 +9,14 @@
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
+#include "base/optional.h"

[nasko, 2017/02/16 21:37:29]

Where is base::optional used here? Do we really need this include?

[sandersd (OOO until July 31), 2017/02/25 01:19:38]

Done.

 #include "media/base/decode_status.h"
 #include "media/mojo/interfaces/video_decoder.mojom.h"
 
+namespace gpu {
+struct SyncToken;
+};
+
 namespace media {
 
 class MojoDecoderBufferReader;
@@ -36,6 +41,8 @@ class MojoVideoDecoderService : public mojom::VideoDecoder {
   void Decode(mojom::DecoderBufferPtr buffer,
               const DecodeCallback& callback) final;
   void Reset(const ResetCallback& callback) final;
+  void OnReleaseMailbox(const base::UnguessableToken& release_token,
+                        const gpu::SyncToken& release_sync_token) final;
 
  private:
   // Helper methods so that we can bind them with a weak pointer to avoid