It's come up multiple times that ASAN doesn't support
std::nothrow which leads to OOM bugs filed by the fuzzers.
Use a common helper to avoid this and return nullptr for large
allocations when ASAN is enabled.
Bug: none
Change-Id: I492b4ff4e498cf82d4ca08ba849671d3d16b9cfb
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/36280
Reviewed-by: Jiawei Shao <jiawei.shao@intel.com>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Austin Eng <enga@chromium.org>
