[Media Router] Add a supports_web_ui_controller attribute to MediaRoute

chrome/common/media_router/mojo/media_router.mojom

 // Copyright 2015 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/common/media_router/mojo/media_controller.mojom";
 import "chrome/common/media_router/mojo/media_status.mojom";
 import "mojo/common/time.mojom";
 import "net/interfaces/ip_address.mojom";
@@ skipping 70 matching lines @@
   // May be missing if route is not local.
   string? media_source;
   // The ID of sink that is rendering the media content.
   string media_sink_id;
   // Human readable description of this route, e.g. "Tab casting".
   string description;
   // Specifies that the route is requested locally.
   bool is_local;
   // An optional path to an HTML page bundled bundled with the media router
   // component extension. When set, the route can have custom route detail as
-  // well as its own route controls in the media router dialog.
+  // well as its own route controls within an extensionview in the Media Router
+  // dialog.
   string? custom_controller_path;
+  // Whether the provider for this route supports the Media Route Controller.
+  bool supports_media_route_controller;
   // Set to true if this route should be displayed for |media_sink_id| in UI.
   bool for_display;
   // Set to true if this route was created by an incognito profile.
   bool is_incognito;
   // Set to true if this route corresponds to an offscreen presentation.
   bool is_offscreen_presentation;
 };
 
 // Notifications or an actionable events to be shown to the user.
 // When is_blocking is true, media router UI shows issue only:
@@ skipping 362 matching lines @@
 
   // Called when the a batch of messages arrives from the media sink for the
   // route given by |route_id|.
   // |StartListeningForRouteMessages| must be called first in order to receive
   // messages.
   // |route_id|: ID of route of the messages.
   // |messages|: A non-empty list of messages received.
   OnRouteMessagesReceived(string route_id,
                           array<RouteMessage> messages);
 };