Use legacy color filter API when doing legacy paint conversion

Matt fixed mode color filter so that the 4f filter uses a linearized
version of the stored color. This restores previous behavior, where legacy
devices are doing everything in sRGB space.

BUG=skia:

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=3581

Change-Id: I6abac176aaeab1242ca74b71ffb7f6df80ad9525
Reviewed-on: https://skia-review.googlesource.com/3581
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Mike Klein <mtklein@chromium.org>
1 file changed