Replace log2 with SkNextLog2

log2 didn't exist on Android until API 18, and it's doing double
precision math. I think this integer version is what we want?

Bug: skia:
Change-Id: I4909153c56a266688355349cda5d553b69f5c942
Reviewed-on: https://skia-review.googlesource.com/33680
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
1 file changed