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>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/lazy/SkDiscardableMemoryPool.cpp b/src/lazy/SkDiscardableMemoryPool.cpp
index 6e5582a494..394e325707 100644
--- a/src/lazy/SkDiscardableMemoryPool.cpp
+++ b/src/lazy/SkDiscardableMemoryPool.cpp
@@ -164,7 +164,7 @@ void DiscardableMemoryPool::dumpDownTo(size_t budget) {
 }
 
 std::unique_ptr<SkDiscardableMemory> DiscardableMemoryPool::make(size_t bytes) {
-    SkAutoFree addr(sk_malloc_flags(bytes, 0));
+    SkAutoFree addr(sk_malloc_canfail(bytes));
     if (nullptr == addr) {
         return nullptr;
     }