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diff --git a/chromium/content/public/browser/media_controller.h b/chromium/content/public/browser/media_controller.h
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+++ b/chromium/content/public/browser/media_controller.h
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+// Copyright 2018 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 CONTENT_PUBLIC_BROWSER_MEDIA_CONTROLLER_H_
+#define CONTENT_PUBLIC_BROWSER_MEDIA_CONTROLLER_H_
+
+#include "base/time/time.h"
+
+namespace content {
+
+// High level interface that allows a controller to issue simple media commands.
+// Modeled after the media_router.mojom.MediaController interface.
+// State changes will be signaled via the MediaStatusObserver interface.
+// TODO(tguilbert): Add MediaStatusObserver interface.
+class MediaController {
+ public:
+  virtual ~MediaController() = default;
+
+  // Starts playing the media if it is paused. Is a no-op if not supported by
+  // the media or the media is already playing.
+  virtual void Play() = 0;
+
+  // Pauses the media if it is playing. Is a no-op if not supported by the media
+  // or the media is already paused.
+  virtual void Pause() = 0;
+
+  // Mutes the media if |mute| is true, and unmutes it if false. Is a no-op if
+  // not supported by the media.
+  virtual void SetMute(bool mute) = 0;
+
+  // Changes the current volume of the media, with 1 being the highest and 0
+  // being the lowest/no sound. Does not change the (un)muted state of the
+  // media. Is a no-op if not supported by the media.
+  virtual void SetVolume(float volume) = 0;
+
+  // Sets the current playback position. |time| must be less than or equal to
+  // the duration of the media. Is a no-op if the media doesn't support seeking.
+  virtual void Seek(base::TimeDelta time) = 0;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_PUBLIC_BROWSER_MEDIA_CONTROLLER_H_