Reland [Media Router] Custom Controls 3 - add plumbing through MRUI and MRWebUIMessageHandler

chrome/browser/media/router/mojo/media_route_controller.cc

Index: chrome/browser/media/router/mojo/media_route_controller.cc
diff --git a/chrome/browser/media/router/mojo/media_route_controller.cc b/chrome/browser/media/router/mojo/media_route_controller.cc
index 0fd4f8a574473438b4cd741239623aab3714e372..425dcd4ab99568b99f52078d4c02274af23194af 100644
--- a/chrome/browser/media/router/mojo/media_route_controller.cc
+++ b/chrome/browser/media/router/mojo/media_route_controller.cc
@@ -42,27 +42,27 @@ MediaRouteController::MediaRouteController(
       &MediaRouteController::OnMojoConnectionError, base::Unretained(this)));
 }
 
-void MediaRouteController::Play() {
+void MediaRouteController::Play() const {
   DCHECK(is_valid_);
   mojo_media_controller_->Play();
 }
 
-void MediaRouteController::Pause() {
+void MediaRouteController::Pause() const {
   DCHECK(is_valid_);
   mojo_media_controller_->Pause();
 }
 
-void MediaRouteController::Seek(base::TimeDelta time) {
+void MediaRouteController::Seek(base::TimeDelta time) const {
   DCHECK(is_valid_);
   mojo_media_controller_->Seek(time);
 }
 
-void MediaRouteController::SetMute(bool mute) {
+void MediaRouteController::SetMute(bool mute) const {
   DCHECK(is_valid_);
   mojo_media_controller_->SetMute(mute);
 }
 
-void MediaRouteController::SetVolume(float volume) {
+void MediaRouteController::SetVolume(float volume) const {
   DCHECK(is_valid_);
   mojo_media_controller_->SetVolume(volume);
 }