Cleanup use of legacy SkSurface creation methods a bit

This:
   removes the SK_SUPPORT_LEGACY_NEW_SURFACE_API flag from the bzl build
   cleans up some remaining uses of the old API

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2223023002

Review-Url: https://codereview.chromium.org/2223023002
4 files changed