rewrite TArray test to not delete an SkSTArray via a SkTArray pointer.

This should decouple our thinking around SkTArray, SkSTArray, vector, allocators, etc. from getting sized-deleter clean.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1760933002

Review URL: https://codereview.chromium.org/1760933002
1 file changed