PartitionAlloc: Make in-place realloc() less likely to happen
On direct mapped allocations, we support downsizing realloc() in-place.
As part of trying to figure out what causes apparent OOM crashes, do this
only in much more restricted circumstances:
- Only down to 80 % of the size of the original mapping.
- Only down to sizes larger than the maximum bucketed allocation size.
BUG=368406
Review URL: https://codereview.chromium.org/254103003
git-svn-id: svn://svn.chromium.org/blink/trunk@172932 bbb929c8-8fbe-4397-9dbb-9b2b20218538
3 files changed
