Remove Chromecast extension support from cast system tray menu.

chrome/browser/ui/ash/cast_config_delegate_media_router.cc

Index: chrome/browser/ui/ash/cast_config_delegate_media_router.cc
diff --git a/chrome/browser/ui/ash/cast_config_delegate_media_router.cc b/chrome/browser/ui/ash/cast_config_delegate_media_router.cc
index 83c18b667c52177f003b2de494ba41bd1df89ae6..c626ce4c0916d05e1f0b5c3a464cb63e97a74b3a 100644
--- a/chrome/browser/ui/ash/cast_config_delegate_media_router.cc
+++ b/chrome/browser/ui/ash/cast_config_delegate_media_router.cc
@@ -151,10 +151,6 @@ CastDeviceCache* CastConfigDelegateMediaRouter::devices() {
   return devices_.get();
 }
 
-bool CastConfigDelegateMediaRouter::HasCastExtension() const {
-  return true;
-}
-
 void CastConfigDelegateMediaRouter::RequestDeviceRefresh() {
   // The media router component isn't ready yet.
   if (!devices())
@@ -223,13 +219,6 @@ void CastConfigDelegateMediaRouter::StopCasting(const std::string& route_id) {
   GetMediaRouter()->TerminateRoute(route_id);
 }
 
-bool CastConfigDelegateMediaRouter::HasOptions() const {
-  // There are no plans to have an options page for the MediaRouter.
-  return false;
-}
-
-void CastConfigDelegateMediaRouter::LaunchCastOptions() {}
-
 void CastConfigDelegateMediaRouter::AddObserver(
     ash::CastConfigDelegate::Observer* observer) {
   observer_list_.AddObserver(observer);