Add comment in the capture.h
Add comment in the capture.h

 - Add @return comment at the GetNativeImageSource()

Change-Id: Ic46eac21b4f138871ae5e1a7b9dc19140da85b9e
Signed-off-by: Seungho, Baek <eb41b4b4ab7814234e401c31ebc0c41202488340@samsung.com>

dalihub/dali-adaptor,dalihub/dali-adaptor,dalihub/dali-adaptor,dalihub/dali-adaptor,dalihub/dali-adaptor