remove Clamp_S32_opaque_D32_nofilter_DX_shaderproc

This is a warmup to removing all _opaque_ shader procs.

Oddly this shows up as mostly performance-positive:

just-that-one (compared to master) is likely
   24.11% slower in bitmap_RGBA_8888_scale
    5.23% faster in shadermaskfilter_picture_ff
    5.73% faster in shadermaskfilter_picture_80
   10.02% faster in maskshader
   40.24% faster in bitmap_RGBA_8888_A_source_stripes_three
   40.88% faster in bitmap_RGBA_8888_A_source_stripes_two
   54.40% faster in bitmap_RGBA_8888_A
   60.87% faster in top25desk_weather_com.skp_1
   62.39% faster in bitmap_RGBA_8888_A_source_opaque
   62.95% faster in bitmap_RGBA_8888_update
   63.15% faster in bitmap_RGBA_8888_update_volatile
   63.34% faster in bitmap_RGBA_8888
   71.40% faster in bitmap_RGBA_8888_A_source_transparent
   86.13% faster in bitmaprect_FF_nofilter_trans
  412.43% faster in constXTile_CC

Cq-Include-Trybots: master.tryserver.blink:linux_trusty_blink_rel
Change-Id: Ifef92a1efcb6c35b8519da7599d31ea3bb41c3a4
Reviewed-on: https://skia-review.googlesource.com/c/171041
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
Auto-Submit: Mike Klein <mtklein@google.com>
1 file changed