Revert of Try to use only std::aligned_storage. (patchset #2 id:20001 of https://codereview.chromium.org/2468243002/ )

Reason for revert:
DM failure: https://luci-milo.appspot.com/swarming/task/324387bf30100f10

c:\b\work\skia\src\core\sklinearbitmappipeline.cpp:49: fatal error: "assert(sizeof(Variant) <= sizeof(fSpace))"

Original issue's description:
> Try to use only std::aligned_storage. This does not change the API.
>
> BUG=skia:
> GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2468243002
> TBR=reed@google.com
>
> Committed: https://skia.googlesource.com/skia/+/e736e0c2d52a29a3b88a29ab39b3a90a5a2443a0

TBR=mtklein@chromium.org,bsalomon@google.com,mtklein@google.com,reed@google.com,herb@google.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Review-Url: https://codereview.chromium.org/2474073002
3 files changed