[WIP] firebase init Error

sdk-intergration/LocalPackages/com.neuecc.unirx/Scripts/Schedulers/ImmediateScheduler.cs

@@ -0,0 +1,43 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Text;
+using System.Threading;
+
+namespace UniRx
+{
+    public static partial class Scheduler
+    {
+        public static readonly IScheduler Immediate = new ImmediateScheduler();
+
+        class ImmediateScheduler : IScheduler
+        {
+            public ImmediateScheduler()
+            {
+            }
+
+            public DateTimeOffset Now
+            {
+                get { return Scheduler.Now; }
+            }
+
+            public IDisposable Schedule(Action action)
+            {
+                action();
+                return Disposable.Empty;
+            }
+
+            public IDisposable Schedule(TimeSpan dueTime, Action action)
+            {
+                var wait = Scheduler.Normalize(dueTime);
+                if (wait.Ticks > 0)
+                {
+                    Thread.Sleep(wait);
+                }
+
+                action();
+                return Disposable.Empty;
+            }
+        }
+    }
+}