EME: Allow temporary sessions to be removed for ClearKey only.

media/blink/webcontentdecryptionmodulesession_impl.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 MEDIA_BLINK_WEBCONTENTDECRYPTIONMODULESESSION_IMPL_H_
 #define MEDIA_BLINK_WEBCONTENTDECRYPTIONMODULESESSION_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 66 matching lines @@
   // Keep track of whether the session has been closed or not. The session
   // may be closed as a result of an application calling close(), or the CDM
   // may close the session at any point.
   // https://w3c.github.io/encrypted-media/#session-closed
   // |has_close_been_called_| is used to keep track of whether close() has
   // been called or not. |is_closed_| is used to keep track of whether the
   // close event has been received or not.
   bool has_close_been_called_;
   bool is_closed_;
 
+  // Keep track of whether this is a persistent session or not.
+  bool is_persistent_session_;
+
   base::ThreadChecker thread_checker_;
   // Since promises will live until they are fired, use a weak reference when
   // creating a promise in case this class disappears before the promise
   // actually fires.
   base::WeakPtrFactory<WebContentDecryptionModuleSessionImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(WebContentDecryptionModuleSessionImpl);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BLINK_WEBCONTENTDECRYPTIONMODULESESSION_IMPL_H_