Print console warnings when MediaSession message is dirty

third_party/WebKit/Source/modules/mediasession/MediaMetadataSanitizer.h

 // Copyright 2016 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 MediaMetadataSanitizer_h
 #define MediaMetadataSanitizer_h
 
 #include "public/platform/modules/mediasession/media_session.mojom-blink.h"
 
 namespace blink {
 
+class ExecutionContext;
 class MediaMetadata;
 
 class MediaMetadataSanitizer {
  public:
   // Produce the sanitized metadata, which will later be sent to the
   // MediaSession mojo service.
   static blink::mojom::blink::MediaMetadataPtr sanitizeAndConvertToMojo(
-      const MediaMetadata*);
+      const MediaMetadata*,
+      ExecutionContext*);
 };
 
 }  // namespace blink
 
 #endif  // MediaMetadataSanitizer_h