begin cleanup of malloc porting layer
1. Merge some of the allocators into sk_malloc_flags by redefining a flag to mean zero-init
2. Add more private helpers to simplify our call-sites (and handle some overflow mul checks)
3. The 2-param helpers rely on the saturating SkSafeMath::Mul to pass max_size_t as the request,
which should always fail.
Bug:508641
Change-Id: I322f1e6ed91113467e0fdb12c91c3dad33d890c8
Reviewed-on: https://skia-review.googlesource.com/90940
Commit-Queue: Mike Reed <reed@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
Reviewed-by: Stephan Altmueller <stephana@google.com>
15 files changed