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

chrome/browser/ui/ash/launcher/chrome_launcher_controller.h

Index: chrome/browser/ui/ash/launcher/chrome_launcher_controller.h
diff --git a/chrome/browser/ui/ash/launcher/chrome_launcher_controller.h b/chrome/browser/ui/ash/launcher/chrome_launcher_controller.h
index 5315d36fb59ad61d2e9ef477f60fc131d336dbec..27a1cc0099d2282f943fceddd0366d38ab07bc4d 100644
--- a/chrome/browser/ui/ash/launcher/chrome_launcher_controller.h
+++ b/chrome/browser/ui/ash/launcher/chrome_launcher_controller.h
@@ -149,6 +149,13 @@ class ChromeLauncherController : public ash::mojom::ShelfObserver,
                  ash::LaunchSource source,
                  int event_flags);
 
+  // As above but includes |launch_id|, an id that can be passed to an app when
+  // launched in order to support multiple shelf items per app.
+  void LaunchAppWithLaunchId(const std::string& app_id,
+                             const std::string& launch_id,
+                             ash::LaunchSource source,
+                             int event_flags);
+
   // If |app_id| is running, reactivates the app's most recently active window,
   // otherwise launches and activates the app.
   // Used by the app-list, and by pinned-app shelf items.