Use data pipe to pass DecoderBuffer contents

media/mojo/interfaces/decryptor.mojom

Index: media/mojo/interfaces/decryptor.mojom
diff --git a/media/mojo/interfaces/decryptor.mojom b/media/mojo/interfaces/decryptor.mojom
index dad3d6838f80f85960ea56bc65ab3ce3436fe001..6fe3347a265ccb891b58130eb8ab3dd3a4781da2 100644
--- a/media/mojo/interfaces/decryptor.mojom
+++ b/media/mojo/interfaces/decryptor.mojom
@@ -19,6 +19,11 @@ interface Decryptor {
     ERROR  // Key is available but an error occurred during decryption.
   };
 
+  // Pass the two data pipes used to transfer DecoderBuffer contents to and
+  // from the Decryptor.

[xhwang, 2015/12/19 18:16:30]

Must be called before all other methods?

[jrummell, 2015/12/21 23:20:54]

Done.

+  Initialize(handle<data_pipe_consumer> receive_pipe,
+             handle<data_pipe_producer> transmit_pipe);

[xhwang, 2015/12/19 18:16:30]

Since this is an interface, provide more details about how to setup and use
these two pipes... For example, what kind of data should be written to the
|transmit_pipe|, and what kind of data should be read from the |receive_pipe|...

[jrummell, 2015/12/21 23:20:54]

Done.

+
   // Decrypts the |encrypted| buffer and returns the decrypt |status| and
   // decrypted |buffer|.
   // At most one decrypt call is allowed at any time for a |stream_type|.