Not sure it is actually a permission so much as a feature of Google Now. Paragraph 2 of this page: http://arstechnica.com/gadgets/2015/10/android-6-0-marshmall

Not sure it is actually a permission so much as a feature of Google Now. Paragraph 2 of this page: http://arstechnica.com/gadgets/2015/10/android-6-0-marshmallow-thoroughly-reviewed/3/ http://arstechnica.com/gadgets/2015/10/android-6-0-marshmall...