Further reduce stack size according to -fstack-usage

It seems that google3 is using -fstack-usage to determine whether
we exceed 16k.

Bug: skia:
Change-Id: I259ff7fc0e6614dde83eb340f0a17efbc52ebf57
Reviewed-on: https://skia-review.googlesource.com/26940
Reviewed-by: Yuqian Li <liyuqian@google.com>
Commit-Queue: Yuqian Li <liyuqian@google.com>
1 file changed