[Media Router] Convert to use typemaps for media_router.mojom.

chrome/browser/ui/ash/cast_config_client_media_router.cc

 // 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.
 
 #include "chrome/browser/ui/ash/cast_config_client_media_router.h"
 
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
+#include "base/optional.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/media/router/media_router.h"
 #include "chrome/browser/media/router/media_router_factory.h"
 #include "chrome/browser/media/router/media_router_feature.h"
 #include "chrome/browser/media/router/media_routes_observer.h"
 #include "chrome/browser/media/router/media_sinks_observer.h"
 #include "chrome/browser/media/router/media_source_helper.h"
 #include "chrome/browser/profiles/profile_manager.h"
@@ skipping 86 matching lines @@
   for (const media_router::MediaSink& sink : sinks) {
     // The media router adds a MediaSink instance that doesn't have a name. Make
     // sure to filter that sink out from the UI so it is not rendered, as it
     // will be a line that only has a icon with no apparent meaning.
     if (sink.name().empty())
       continue;
 
     // Hide all sinks which have a domain (ie, castouts) to meet privacy
     // requirements. This will be enabled once UI can display the domain. See
     // crbug.com/624016.
-    if (!sink.domain().empty())
+    if (sink.domain() && !sink.domain()->empty())
       continue;
 
     sinks_.push_back(sink);
   }
 
   cast_config_client_->RequestDeviceRefresh();
 }
 
 void CastDeviceCache::OnRoutesUpdated(
     const MediaRoutes& routes,
@@ skipping 57 matching lines @@
   // update those sinks with activity information.
 
   std::vector<ash::mojom::SinkAndRoutePtr> items;
 
   for (const media_router::MediaSink& sink : devices()->sinks()) {
     ash::mojom::SinkAndRoutePtr sr = ash::mojom::SinkAndRoute::New();
     sr->route = ash::mojom::CastRoute::New();
     sr->sink = ash::mojom::CastSink::New();
     sr->sink->id = sink.id();
     sr->sink->name = sink.name();
-    sr->sink->domain = sink.domain();
+    sr->sink->domain = sink.domain().value_or(std::string());
     items.push_back(std::move(sr));
   }
 
   for (const media_router::MediaRoute& route : devices()->routes()) {
     if (!route.for_display())
       continue;
 
     for (ash::mojom::SinkAndRoutePtr& item : items) {
       if (item->sink->id == route.media_sink_id()) {
         item->route->id = route.media_route_id();
@@ skipping 34 matching lines @@
   switch (type) {
     case chrome::NOTIFICATION_LOGIN_USER_PROFILE_PREPARED:
       // The active profile has changed, which means that the media router has
       // as well. Reset the device cache to ensure we are using up-to-date
       // object instances.
       devices_.reset();
       RequestDeviceRefresh();
       break;
   }
 }