EME: Clear Key CDM now generates keystatuseschange event on close()

media/cdm/aes_decryptor.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "media/cdm/aes_decryptor.h"
 
 #include <stddef.h>
 #include <list>
 #include <utility>
 #include <vector>
@@ skipping 393 matching lines @@
                                 std::unique_ptr<SimpleCdmPromise> promise) {
   // Validate that this is a reference to an active session and then forget it.
   std::set<std::string>::iterator it = valid_sessions_.find(session_id);
   DCHECK(it != valid_sessions_.end());
 
   valid_sessions_.erase(it);
 
   // Close the session.
   DeleteKeysForSession(session_id);
   promise->resolve();
+
+  // Update key statuses. All keys have been destroyed, so it's an empty set.
+  session_keys_change_cb_.Run(session_id, false, CdmKeysInfo());
+
+  // Update expiration time to NaN. (http://crbug.com/624192)
+
+  // Resolve the closed attribute.
   session_closed_cb_.Run(session_id);
 }
 
 void AesDecryptor::RemoveSession(const std::string& session_id,
                                  std::unique_ptr<SimpleCdmPromise> promise) {
   // AesDecryptor doesn't keep any persistent data, so this should be
   // NOT_REACHED().
   // TODO(jrummell): Make sure persistent session types are rejected.
   // http://crbug.com/384152.
   //
@@ skipping 183 matching lines @@
 bool AesDecryptor::DecryptionKey::Init() {
   CHECK(!secret_.empty());
   decryption_key_ =
       crypto::SymmetricKey::Import(crypto::SymmetricKey::AES, secret_);
   if (!decryption_key_)
     return false;
   return true;
 }
 
 }  // namespace media