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

chrome/browser/media/router/route_message.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 CHROME_BROWSER_MEDIA_ROUTER_ROUTE_MESSAGE_H_
-#define CHROME_BROWSER_MEDIA_ROUTER_ROUTE_MESSAGE_H_
-
-#include <stdint.h>
-
-#include <string>
-#include <vector>
-
-#include "base/optional.h"
-
-namespace media_router {
-
-// TODO(mfoltz): Replace with nearly-identical
-// content::PresentationConnectionMessage.
-struct RouteMessage {
-  enum Type { TEXT, BINARY } type = TEXT;
-  // Used when the |type| is TEXT.
-  base::Optional<std::string> text;
-  // Used when the |type| is BINARY.
-  base::Optional<std::vector<uint8_t>> binary;
-
-  RouteMessage();
-  RouteMessage(const RouteMessage& other);
-  ~RouteMessage();
-
-  std::string ToHumanReadableString() const;
-};
-
-}  // namespace media_router
-
-#endif  // CHROME_BROWSER_MEDIA_ROUTER_ROUTE_MESSAGE_H_