Pass key_information on SessionKeysChange message

media/mojo/interfaces/content_decryption_module.mojom

Index: media/mojo/interfaces/content_decryption_module.mojom
diff --git a/media/mojo/interfaces/content_decryption_module.mojom b/media/mojo/interfaces/content_decryption_module.mojom
index 9dbc8244ea99fbb44f461305727a1a45b961b955..0cb07271db4130961ad35b5b0b87d356ee0a236f 100644
--- a/media/mojo/interfaces/content_decryption_module.mojom
+++ b/media/mojo/interfaces/content_decryption_module.mojom
@@ -19,6 +19,16 @@ enum CdmException {
   OUTPUT_ERROR
 };
 
+// Transport layer of media::CdmKeyInformation::KeyStatus (see
+// media/base/cdm_key_information.h). This is used for indicating the status
+// of a specific key ID.
+enum CdmKeyStatus {
+  USABLE,
+  INTERNAL_ERROR,
+  EXPIRED,
+  OUTPUT_NOT_ALLOWED
+};
+
 // Transport layer of media::CdmPromise (see media/base/cdm_promise.h).
 // - When |success| is true, the promise is resolved and all other fields should
 //   be ignored.
@@ -31,6 +41,15 @@ struct CdmPromiseResult {
   string error_message;
 };
 
+// Transport layer of media::CdmKeyInformation (see
+// media/base/cdm_key_information.h). It is used to specify a key_id and it's
+// associated status.
+struct CdmKeyInformation {
+  array<uint8> key_id;
+  CdmKeyStatus status;
+  uint32 system_code;
+};
+
 // An interface that represents a CDM in the Encrypted Media Extensions (EME)
 // spec (https://w3c.github.io/encrypted-media/). See media/base/media_keys.h.
 [Client=ContentDecryptionModuleClient]
@@ -98,7 +117,8 @@ interface ContentDecryptionModuleClient {
   OnSessionError(string session_id, CdmException exception,
                  uint32 system_code, string error_message);
 
-  OnSessionKeysChange(string session_id, bool has_additional_usable_key);
+  OnSessionKeysChange(string session_id, bool has_additional_usable_key,
+                      array<CdmKeyInformation> key_information);
 
   OnSessionExpirationUpdate(string session_id, int64 new_expiry_time_usec);
 };