Use OnceCallback on Mojo interfaces in //chrome/common/media_router

chrome/browser/media/router/mojo/media_router_mojo_impl.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/media/router/mojo/media_router_mojo_impl.h"
 
 #include <stddef.h>
 
 #include <utility>
 
@@ skipping 109 matching lines @@
   if (!pending_requests_.empty()) {
     DLOG_WITH_INSTANCE(ERROR) << "A connection error while there are pending "
                                  "requests.";
     SetWakeReason(MediaRouteProviderWakeReason::CONNECTION_ERROR);
     AttemptWakeEventPage();
   }
 }
 
 void MediaRouterMojoImpl::RegisterMediaRouteProvider(
     mojom::MediaRouteProviderPtr media_route_provider_ptr,
-    const mojom::MediaRouter::RegisterMediaRouteProviderCallback&
-        callback) {
+    mojom::MediaRouter::RegisterMediaRouteProviderCallback callback) {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
 #if defined(OS_WIN)
   // The MRPM may have been upgraded or otherwise reload such that we could be
   // seeing an MRPM that doesn't know mDNS is enabled, even if we've told a
   // previously registered MRPM it should be enabled. Furthermore, there may be
   // a pending request to enable mDNS, so don't clear this flag after
   // ExecutePendingRequests().
   is_mdns_enabled_ = false;
 #endif
   if (event_page_tracker_->IsEventPageSuspended(
           media_route_provider_extension_id_)) {
     DVLOG_WITH_INSTANCE(1)
         << "RegisterMediaRouteProvider was called while extension is "
            "suspended.";
     media_route_provider_.reset();
     SetWakeReason(MediaRouteProviderWakeReason::REGISTER_MEDIA_ROUTE_PROVIDER);
     AttemptWakeEventPage();
     return;
   }
 
   media_route_provider_ = std::move(media_route_provider_ptr);
   media_route_provider_.set_connection_error_handler(base::Bind(
       &MediaRouterMojoImpl::OnConnectionError, base::Unretained(this)));
-  callback.Run(instance_id_);
+  std::move(callback).Run(instance_id_);
   ExecutePendingRequests();
   SyncStateToMediaRouteProvider();
 
   wakeup_attempt_count_ = 0;
 }
 
 void MediaRouterMojoImpl::OnIssue(const IssueInfo& issue) {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
   DVLOG_WITH_INSTANCE(1) << "OnIssue " << issue.title;
   issue_manager_.AddIssue(issue);
@@ skipping 924 matching lines @@
 
 void MediaRouterMojoImpl::OnMediaControllerCreated(
     const MediaRoute::Id& route_id,
     bool success) {
   // TODO(takumif): Record success/failure with UMA.
   DVLOG_WITH_INSTANCE(1) << "OnMediaControllerCreated: " << route_id
                          << (success ? " was successful." : " failed.");
 }
 
 }  // namespace media_router