Split MediaContentType and AudioFocusType

media/base/media_content_type.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 MEDIA_BASE_MEDIA_CONTENT_TYPE_H_
+#define MEDIA_BASE_MEDIA_CONTENT_TYPE_H_
+
+#include "base/time/time.h"
+#include "media/base/media_export.h"
+
+namespace media {
+
+// The content type of a media player, which will be used by MediaSession to
+// control its players.
+enum class MediaContentType {
+  // Type indicating that a player is persistent, which needs to take audio
+  // focus to play.
+  Persistent,
+  // Type indicating that a player only plays a transient sound.
+  Transient,
+  // Type indicating that a player is a Pepper instance. MediaSession may duck
+  // the
+  // player instead of pausing it.

[mlamouri (slow - plz ping), 2016/08/23 13:19:04]

style: you seem to
break lines
too
often
:)

[Zhiqiang Zhang (Slow), 2016/08/26 10:26:20]

Done.

+  Pepper,
+  // Type indicating that a player cannot be controlled. MediaSession wil ignore
+  // this player.
+  Uncontrollable
+};
+
+// Utility function for deciding whether a player is treated as Content type

[Tom Sepez, 2016/08/25 19:25:32]

nit: for deciding the MediaContentType of a player based on its duration. 

[Zhiqiang Zhang (Slow), 2016/08/26 10:26:20]

Done.

+// based on its duration.
+MEDIA_EXPORT MediaContentType
+DurationToMediaContentType(base::TimeDelta duration);
+
+}  // namespace media
+
+#endif  // MEDIA_BASE_MEDIA_CONTENT_TYPE_H_