Revert of Deparameterize SkVarAlloc. (patchset #6 id:100001 of https://codereview.chromium.org/721313002/)
Reason for revert:
Unit test failures on 32-bit machines.
test Record_Alignment: ../../tests/RecordTest.cpp:100 is_aligned(record.alloc<uint64_t>())
Original issue's description:
> Deparameterize SkVarAlloc.
>
> SkRecord performance is not sensitive to these values, so we can cut some
> storage. This rearranges the space-remaining logic to use a count of bytes
> left rather than a pointer to the end, cutting memory usage a little more.
>
> An SkVarAlloc used to weigh 20 or 32 bytes which now becomes 16 or 24.
>
> I think if I think about it a bit more I can trim off that Block* too,
> getting us to 12 or 16 bytes.
>
> Because we now just always grow by doubling, this CL switches from storing
> fSmallest to its log base 2. This has the nice effect of never having to worry
> about it overflowing, and means we can probably squeeze it down into a byte
> if we want, even 6 bits.
>
> BUG=skia:
>
> Committed: https://skia.googlesource.com/skia/+/bc415389855888af5a1282ca4b6bee30afa3d69d
TBR=reed@google.com,mtklein@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=skia:
Review URL: https://codereview.chromium.org/718203006
3 files changed