Purge the App Launcher code from Windows.

ui/app_list/views/apps_grid_view_delegate.h

Index: ui/app_list/views/apps_grid_view_delegate.h
diff --git a/ui/app_list/views/apps_grid_view_delegate.h b/ui/app_list/views/apps_grid_view_delegate.h
index 3be3eeeef5882409dc7e7d034df9b73d9736c99b..f1787e3d04eee1dff8aecccfb8a941015ff66188 100644
--- a/ui/app_list/views/apps_grid_view_delegate.h
+++ b/ui/app_list/views/apps_grid_view_delegate.h
@@ -24,12 +24,6 @@ class APP_LIST_EXPORT AppsGridViewDelegate {
   // the flags of the keyboard/mouse event that triggers the activation request.
   virtual void ActivateApp(AppListItem* item, int event_flags) = 0;
 
-  // Gets the path to a shortcut for the app represented by |item|. |callback|
-  // may be run immediately.
-  virtual void GetShortcutPathForApp(
-      const std::string& app_id,
-      const base::Callback<void(const base::FilePath&)>& callback) = 0;
-
   // Called by the root grid view to cancel a drag that started inside a folder.
   // This can occur when the root grid is visible for a reparent and its model
   // changes, necessitating a cancel of the drag operation.