add flags for future skia api change
add flags for future skia api change

for skia cl https://codereview.chromium.org/1272713005#

BUG=
NOTRY=True
just adding new defines

Review URL: https://codereview.chromium.org/1272313003

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#342128}

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