fix ci build error

Author: peihan.cph

shell/common/shell.cc

@@ -291,12 +291,12 @@ static void PerformInitializationTasks(const Settings& settings) {
 }
 
 std::unique_ptr<Shell> Shell::Create(
-    fml::closure& async_init_callback,
     TaskRunners task_runners,
     Settings settings,
     const Shell::CreateCallback<PlatformView>& on_create_platform_view,
     const Shell::CreateCallback<Rasterizer>& on_create_rasterizer) {
-  return Shell::Create(async_init_callback,                    //
+  fml::closure empty_func;
+  return Shell::Create(empty_func,                             //init sync as before
                        std::move(task_runners),                //
                        WindowData{/* default window data */},  //
                        std::move(settings),                    //

shell/common/shell.h

@@ -101,9 +101,6 @@ class Shell final : public PlatformView::Delegate,
   ///             If this is the first instance of a shell in the process, this
   ///             call also bootstraps the Dart VM.
   ///
-  /// @param[in]  async_init_callback      if null,init sync.
-  ///                                      else init async.and called when
-  ///                                      asyncInit end
   /// @param[in]  task_runners             The task runners
   /// @param[in]  settings                 The settings
   /// @param[in]  on_create_platform_view  The callback that must return a
@@ -124,7 +121,6 @@ class Shell final : public PlatformView::Delegate,
   ///             immediately after getting a pointer to it.
   ///
   static std::unique_ptr<Shell> Create(
-      fml::closure& async_init_callback,
       TaskRunners task_runners,
       Settings settings,
       const CreateCallback<PlatformView>& on_create_platform_view,

shell/platform/fuchsia/flutter/engine.cc

@@ -238,7 +238,9 @@ Engine::Engine(Delegate& delegate,
 
   {
     TRACE_EVENT0("flutter", "CreateShell");
+    fml::closure empty_func;
     shell_ = flutter::Shell::Create(
+        empty_func,
         task_runners,                 // host task runners
         flutter::WindowData(),        // default window data
         settings_,                    // shell launch settings