Include header for DISALLOW_COPY_AND_ASSIGN
am: 3a84e4d

* commit '3a84e4d300ed4f09dd519c452d8b3d3bd110f442':
  Include header for DISALLOW_COPY_AND_ASSIGN

Change-Id: I75d171470bc6fa1433c0c49e6d4b891e76494f41