Revert of Cleanup use of legacy SkSurface creation methods a bit (patchset #2 id:20001 of https://codereview.chromium.org/2223023002/ )

Reason for revert:
webkit_headless!

Original issue's description:
> 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
>
> Committed: https://skia.googlesource.com/skia/+/f21cd16228c20927fa4e9b937d6951471cfaa37a

TBR=benjaminwagner@google.com,egdaniel@google.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review-Url: https://codereview.chromium.org/2220933004
diff --git a/public.bzl b/public.bzl
index bb78d65..c409c39 100644
--- a/public.bzl
+++ b/public.bzl
@@ -612,6 +612,7 @@
     "SK_SUPPORT_LEGACY_IMAGEFILTER_PTR",
     "SK_SUPPORT_LEGACY_MASKFILTER_PTR",
     "SK_SUPPORT_LEGACY_MINOR_EFFECT_PTR",
+    "SK_SUPPORT_LEGACY_NEW_SURFACE_API",
     "SK_SUPPORT_LEGACY_PATHEFFECT_PTR",
     "SK_SUPPORT_LEGACY_PICTURE_PTR",
     "SK_SUPPORT_LEGACY_TYPEFACE_PTR",