Update GPU DM/nanobench configs for color testing

- Rename '*srgbnl' to '*srgb'.
- Add '*narrow' and '*enarrow' for testing a gamut narrower than sRGB.
- Stopped blacklisting glessrgb. It no longer uses sRGB pixel configs,
  so should work fine on all GPUs.
- Also runs 'esrgb' (F16 sRGB) everywhere. This is likely to fail on
  some devices that have poor (or no) F16 support.

Change-Id: I941d0758adb3b0c895c7a8a85ff0ae4aa5bff6e7
Reviewed-on: https://skia-review.googlesource.com/136171
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
24 files changed