EME: Close existing sessions on CDM failure

content/renderer/pepper/content_decryptor_delegate.h

Index: content/renderer/pepper/content_decryptor_delegate.h
diff --git a/content/renderer/pepper/content_decryptor_delegate.h b/content/renderer/pepper/content_decryptor_delegate.h
index 4e02249ff33e6fb7db42cc18aa42f2361c7d988f..f9854653ab24cfdf706c71161589a09ed5d39f3c 100644
--- a/content/renderer/pepper/content_decryptor_delegate.h
+++ b/content/renderer/pepper/content_decryptor_delegate.h
@@ -20,6 +20,7 @@
 #include "base/memory/weak_ptr.h"
 #include "media/base/cdm_promise.h"
 #include "media/base/cdm_promise_adapter.h"
+#include "media/base/cdm_session_tracker.h"
 #include "media/base/channel_layout.h"
 #include "media/base/decryptor.h"
 #include "media/base/media_keys.h"
@@ -240,6 +241,8 @@ class ContentDecryptorDelegate {
 
   media::CdmPromiseAdapter cdm_promise_adapter_;
 
+  media::CdmSessionTracker cdm_session_tracker_;
+
   base::WeakPtr<ContentDecryptorDelegate> weak_this_;
   base::WeakPtrFactory<ContentDecryptorDelegate> weak_ptr_factory_;