Opt into newer HQ sampling

The black background in some of the new images is a known issue,
and will be addressed separately (see 1192142). It does not appear
in the actual browser, only in the test harness.

Bug: 1192142
Change-Id: Ibbbba4f210cd014b46b3e36376f0c395246f98ff
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2777231
Commit-Queue: Mike Reed <reed@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
Cr-Commit-Position: refs/heads/master@{#866411}

skia/config/SkUserConfig.h

@@ -209,13 +209,8 @@ SK_API void SkDebugf_FileLine(const char* file,
 // Max. verb count for paths rendered by the edge-AA tessellating path renderer.
 #define GR_AA_TESSELLATOR_MAX_VERB_COUNT 100
 
-
-#define SK_SUPPORT_NEAREST_PICTURESHADER_POSTFILTER
-
 #define SK_SUPPORT_LEGACY_AAA_CHOICE
 
-#define SK_SUPPORT_LEGACY_SPRITE_IGNORE_HQ
-
 #define GR_OP_ALLOCATE_USE_NEW
 
 // Staging for lowp::bilerp_clamp_8888, and for planned misc. others.