add SK_SUPPORT_LEGACY_MINOR_EFFECT_PTR flag for future skia cl
add SK_SUPPORT_LEGACY_MINOR_EFFECT_PTR flag for future skia cl

BUG=

TBR=fmalita
NOTRY=True

Review URL: https://codereview.chromium.org/1823513002

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#382234}

axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk