Pass key_information on SessionKeysChange message

media/cdm/aes_decryptor.cc

Index: media/cdm/aes_decryptor.cc
diff --git a/media/cdm/aes_decryptor.cc b/media/cdm/aes_decryptor.cc
index 9938bae2c8df544ffde76f1169697986d9d3e8cf..e23ce6338a8bfcbe335525f8bf61caf1a279dd8e 100644
--- a/media/cdm/aes_decryptor.cc
+++ b/media/cdm/aes_decryptor.cc
@@ -13,6 +13,7 @@
 #include "crypto/encryptor.h"
 #include "crypto/symmetric_key.h"
 #include "media/base/audio_decoder_config.h"
+#include "media/base/cdm_key_information.h"
 #include "media/base/cdm_promise.h"
 #include "media/base/decoder_buffer.h"
 #include "media/base/decrypt_config.h"
@@ -329,9 +330,19 @@ void AesDecryptor::UpdateSession(const std::string& web_session_id,
 
   promise->resolve();
 
+  // Create the list of all available keys for this session.
+  CdmKeyInformationVector key_information;
+  base::AutoLock auto_lock(key_map_lock_);
+  for (const auto& item : key_map_) {
+    if (item.second->Contains(web_session_id)) {
+      CdmKeyInformation key_id(item.first, CdmKeyInformation::USABLE, 0);
+      key_information.push_back(key_id);
+    }
+  }
+
   // Assume that at least 1 new key has been successfully added and thus
-  // sending true.
-  session_keys_change_cb_.Run(web_session_id, true);
+  // sending true for |has_additional_usable_key|.
+  session_keys_change_cb_.Run(web_session_id, true, key_information);
 }
 
 void AesDecryptor::CloseSession(const std::string& web_session_id,