Merge remote-tracking branch 'nui/merge_work'

Change-Id: Ic807d3dc45e2bd7d209d0e835be3e60881dd8347

diff --cc src/Tizen.NUI/src/public/Window.cs
index 8c2b91f,04b2369..e904b4a
--- 1/src/Tizen.NUI/src/public/Window.cs
--- 2/src/Tizen.NUI/src/public/Window.cs
+++ b/src/Tizen.NUI/src/public/Window.cs
@@@ -767,7 -839,7 +839,7 @@@ namespace Tizen.NU
              return ret;
          }
  
--        internal System.IntPtr GetNativeWindowHandler()
++        public System.IntPtr GetNativeWindowHandler()
          {
              System.IntPtr ret = NDalicManualPINVOKE.GetNativeWindowHandler(HandleRef.ToIntPtr(this.swigCPtr));
              if (NDalicPINVOKE.SWIGPendingException.Pending) throw NDalicPINVOKE.SWIGPendingException.Retrieve();