name SkPixmap missing params

a couple of missing names
trip up bookmaker

TBR=reed@google.com
Bug: skia: 6898
Change-Id: I224f3a0422474cb6d4d3558abb3e800d5abedd12
Reviewed-on: https://skia-review.googlesource.com/46580
Commit-Queue: Cary Clark <caryclark@skia.org>
Reviewed-by: Cary Clark <caryclark@skia.org>
1 file changed