Revert "Extract code for safely creating SkMasks."

This reverts commit 66f2b5eab2ba03950b9d502ed3fc1863d55a9664.

Reason for revert: breaking lots of bots
Original change's description:
> Extract code for safely creating SkMasks.
> 
> This is in preparation for adding a faster small radii blur.
> 
> Change-Id: I8afd4642ebafa63a45031a7a0bd7a720951dc102
> Reviewed-on: https://skia-review.googlesource.com/70040
> Reviewed-by: Florin Malita <fmalita@chromium.org>
> Commit-Queue: Herb Derby <herb@google.com>

TBR=herb@google.com,fmalita@chromium.org,fmalita@google.com

Change-Id: I83a6953f9ae240cc5f09206e3f77490882869a9f
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/70104
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Greg Daniel <egdaniel@google.com>
1 file changed