Enhance chrome.app.window API for shelf integration with restore support

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..08339d7a1bdb77e4da04dd86211a747ee569e397 100644
--- a/chrome/browser/ui/ash/launcher/chrome_launcher_controller_mus.cc
+++ b/chrome/browser/ui/ash/launcher/chrome_launcher_controller_mus.cc
@@ -33,7 +33,7 @@ class ChromeShelfItemDelegate : public ash::mojom::ShelfItemDelegate {
  private:
   // ash::mojom::ShelfItemDelegate:
   void LaunchItem() override {
-    controller_->LaunchApp(app_id_, ash::LAUNCH_FROM_UNKNOWN, ui::EF_NONE);
+    controller_->LaunchApp(app_id_, "", ash::LAUNCH_FROM_UNKNOWN, ui::EF_NONE);
   }
   void ExecuteCommand(uint32_t command_id, int32_t event_flags) override {
     NOTIMPLEMENTED();