Prefixed EME: Fire special KeyError when a persistent session is closed.

content/renderer/media/crypto/proxy_decryptor.h

 // 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.
 
 #ifndef CONTENT_RENDERER_MEDIA_CRYPTO_PROXY_DECRYPTOR_H_
 #define CONTENT_RENDERER_MEDIA_CRYPTO_PROXY_DECRYPTOR_H_
 
 #include <map>
+#include <set>
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/synchronization/lock.h"
 #include "media/base/decryptor.h"
 #include "media/base/media_keys.h"
 
@@ skipping 115 matching lines @@
   KeyErrorCB key_error_cb_;
   KeyMessageCB key_message_cb_;
 
   // Session IDs are used to uniquely track sessions so that CDM callbacks
   // can get mapped to the correct session ID. Session ID should be unique
   // per renderer process for debugging purposes.
   static uint32 next_session_id_;
 
   SessionIdMap sessions_;
 
+  std::set<uint32> persistent_sessions_;
+
   bool is_clear_key_;
 
   DISALLOW_COPY_AND_ASSIGN(ProxyDecryptor);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_CRYPTO_PROXY_DECRYPTOR_H_