remove another SkConvertPixels "fast path"

SkColorSpaceXform now uses the same mechanism as our default path,
SkRasterPipeline.  There's no real reason to jump out to it as a
special case any more.

Change-Id: I19490de5b331267209cf117534942fb175c624c9
Reviewed-on: https://skia-review.googlesource.com/29900
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
1 file changed