Revert "Fix a couple float-cast-overflow in SkScan*."

This reverts commit 3cd0bef0fd9d062bbcc313c329b4f31925e8ded7.

Reason for revert: https://bugs.chromium.org/p/skia/issues/detail?id=7143

Original change's description:
> Fix a couple float-cast-overflow in SkScan*.
> 
> Bug: skia:5060
> Change-Id: I60a48993c77631aaad9354bb86b13204dc618bf4
> Reviewed-on: https://skia-review.googlesource.com/47422
> Commit-Queue: Ben Wagner <benjaminwagner@google.com>
> Reviewed-by: Mike Reed <reed@google.com>

TBR=benjaminwagner@google.com,reed@google.com

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: skia:7143
Change-Id: I0f19720a7d8344789a375bbb6b9e28bf4f4e55ae
Reviewed-on: https://skia-review.googlesource.com/57240
Commit-Queue: Ben Wagner <benjaminwagner@google.com>
Reviewed-by: Ben Wagner <benjaminwagner@google.com>
7 files changed