Revert "Fold analytic clip FPs into GrReducedClip"

This reverts commit 1af37b758bc3c285effb7b96bd27faf4481d90d0.

Reason for revert: asserts

Original change's description:
> Fold analytic clip FPs into GrReducedClip
> 
> Perf result on Pixel phone (sorted by impact):
> 
>   GEOMEAN                               6.73 -> 6.49 ms   [96% ]
> 
>   top25desk_pinterest.skp               0.45 -> 0.49 ms   [107%]
>   desk_pokemonwiki.skp                  14.6 -> 15.9 ms   [106%]
>   keymobi_pinterest.skp                 0.47 -> 0.49 ms   [104%]
>   ...
>   keymobi_androidpolice_com_2012_.skp   3.69 -> 3.09 ms   [83% ]
>   keymobi_shop_mobileweb_ebay_com.skp   2.90 -> 2.29 ms   [78% ]
>   keymobi_boingboing_net.skp            2.95 -> 2.29 ms   [76% ]
>   desk_jsfiddlebigcar.skp               1.79 -> 1.29 ms   [71% ]
>   keymobi_m_youtube_com_watch_v_9.skp   12.9 -> 9.09 ms   [70% ]
>   keymobi_blogger.skp                   3.80 -> 2.69 ms   [70% ]
>   keymobi_sfgate_com_.skp               8.16 -> 5.69 ms   [69% ]
> 
> Cleaner code, improved skps, slightly better geometric mean time.
> 
> Pixel C is mostly unaffected, presumably because it uses window
> rectangles.
> 
> Bug: skia:7190
> Change-Id: I070148258d04284def535134a72a4584c5d6f7c7
> Reviewed-on: https://skia-review.googlesource.com/65460
> Reviewed-by: Brian Salomon <bsalomon@google.com>
> Commit-Queue: Chris Dalton <csmartdalton@google.com>

TBR=bsalomon@google.com,robertphillips@google.com,csmartdalton@google.com

Change-Id: I6c325f969c1f4ff0fe80945a675c5f72a81d3865
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:7190
Reviewed-on: https://skia-review.googlesource.com/66260
Reviewed-by: Chris Dalton <csmartdalton@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
5 files changed