Combine shelf platform and windowed app types.

chrome/browser/ui/ash/launcher/chrome_launcher_controller_mus.cc

Index: chrome/browser/ui/ash/launcher/chrome_launcher_controller_mus.cc
diff --git a/chrome/browser/ui/ash/launcher/chrome_launcher_controller_mus.cc b/chrome/browser/ui/ash/launcher/chrome_launcher_controller_mus.cc
index 562dd7cf4282497694c5ea9a995997a8d94b612c..0576560419d0cfe700a2f7b7290c4a8913c96e2c 100644
--- a/chrome/browser/ui/ash/launcher/chrome_launcher_controller_mus.cc
+++ b/chrome/browser/ui/ash/launcher/chrome_launcher_controller_mus.cc
@@ -150,12 +150,6 @@ void ChromeLauncherControllerMus::SetLauncherItemImage(
   NOTIMPLEMENTED();
 }
 
-bool ChromeLauncherControllerMus::IsWindowedAppInLauncher(
-    const std::string& app_id) {
-  NOTIMPLEMENTED();
-  return false;
-}
-
 void ChromeLauncherControllerMus::SetLaunchType(
     ash::ShelfID id,
     extensions::LaunchType launch_type) {