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`allocate()` with a hint is deprecated in C++17 and removed in C++20.
Note that while `allocate(size_t)` isn't provided prior to C++17,
`allocate(size_t, void* = nullptr)` is and will behave equivalently.

Bug: 752720
Fixed: 1065435
Change-Id: I27a7a22a752e8304988f44d9a2e330a6b2b97db5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2131045Reviewed-by: Tiancong Wang <tcwang@google.com>
Reviewed-by: George Burgess <gbiv@chromium.org>
Commit-Queue: Daniel Cheng <dcheng@chromium.org>
Cr-Commit-Position: refs/heads/master@{#755425}