Android: Detect when native code should flush unsaved data

Source/Core/UICommon/UICommon.cpp

@@ -162,6 +162,11 @@ void Shutdown()
   Config::Shutdown();
 }
 
+void FlushUnsavedData()
+{
+  INFO_LOG_FMT(CORE, "Flushing unsaved data...");
+}
+
 void InitControllers(const WindowSystemInfo& wsi)
 {
   if (g_controller_interface.IsInit())

Source/Core/UICommon/UICommon.h

@@ -14,6 +14,8 @@ namespace UICommon
 void Init();
 void Shutdown();
 
+void FlushUnsavedData();
+
 void InitControllers(const WindowSystemInfo& wsi);
 void ShutdownControllers();