Move c/b/media/router/mojo/*.mojom to chrome/common/media_router/mojo/*.mojom

chrome/browser/media/router/mojo/media_controller.mojom

-// Copyright 2017 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.
-
-module media_router.mojom;
-
-import "chrome/browser/media/router/mojo/media_status.mojom";
-import "mojo/common/time.mojom";
-
-// Interface for a controller to change the current state of a media content.
-// This interface should be kept free of details specific to Media Router, so
-// that it can be moved to the media namespace and be reused for other features
-// in the future.
-interface MediaController {
-  // Starts playing the media if it is paused. Is a no-op if not supported by
-  // the media or the media is already playing.
-  Play();
-
-  // Pauses the media if it is playing. Is a no-op if not supported by the media
-  // or the media is already paused.
-  Pause();
-
-  // Mutes the media if |mute| is true, and unmutes it if false. Is a no-op if
-  // not supported by the media.
-  SetMute(bool mute);
-
-  // 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.
-  SetVolume(float volume);
-
-  // 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.
-  Seek(mojo.common.mojom.TimeDelta time);
-};