Reland "bring back lowp bilerp_clamp_8888"

This reverts commit c6671be0ea75880626807c4c40792b2cb1301a39.

Reason for revert: looks like it didn't help

Original change's description:
> Revert "bring back lowp bilerp_clamp_8888"
> 
> This reverts commit 5043c09b8b092fb932b42312881565f12d3998f5.
> 
> Reason for revert: speculative, to try to unblock android roller
> 
> Original change's description:
> > bring back lowp bilerp_clamp_8888
> > 
> > PS1-3 are the literal code I removed a few months ago.
> > 
> > PS4 adds asserts to make sure we don't underflow.
> > PS5 adds rounding when scaling off bias, reducing diff slightly.
> > 
> > Cq-Include-Trybots: luci.chromium.try:linux-blink-rel
> > Change-Id: Ice573395a1680e1c3b55a8fe3e4d034f15adde1b
> > Reviewed-on: https://skia-review.googlesource.com/c/196620
> > Commit-Queue: Mike Klein <mtklein@google.com>
> > Reviewed-by: Brian Osman <brianosman@google.com>
> 
> TBR=mtklein@google.com,brianosman@google.com,reed@google.com
> 
> # Not skipping CQ checks because original CL landed > 1 day ago.
> 
> Change-Id: I816c23c4a12451be518ea3baf4b9a3fdba9b818a
> Cq-Include-Trybots: luci.chromium.try:linux-blink-rel
> Reviewed-on: https://skia-review.googlesource.com/c/196777
> Reviewed-by: Mike Reed <reed@google.com>

TBR=mtklein@google.com,brianosman@google.com,reed@google.com

Change-Id: I0f96a395ac704a52735c93a08f8ed52a148d5de5
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Cq-Include-Trybots: luci.chromium.try:linux-blink-rel
Reviewed-on: https://skia-review.googlesource.com/c/196980
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
1 file changed