Removing DataSource from Filter hierarchy

media/base/preload.h

+// Copyright (c) 2011 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_PRELOAD_H_
+#define MEDIA_BASE_PRELOAD_H_
+
+namespace media {
+
+// Used to specify video preload states. They are "hints" to the browser about
+// how aggressively the browser should load and buffer data.
+// Please see the HTML5 spec for the descriptions of these values:
+// http://www.w3.org/TR/html5/video.html#attr-media-preload
+//
+// Enum values must match the values in WebCore::MediaPlayer::Preload and
+// there will be assertions at compile time if they do not match.
+enum Preload {
+  NONE,
+  METADATA,
+  AUTO,
+};
+
+}  // namespace media
+
+#endif  // MEDIA_BASE_PRELOAD_H_