Skip clamps in color xform pipelines if possible.

This does skip clamp_0 when converting sRGB to your default colorspace.

Each clamp is ~2% of the pipeline runtime, so it's small, but might as well.

Change-Id: I2bb0dadf84759c31cc825f9b6b17680e7aa7d9f3
Reviewed-on: https://skia-review.googlesource.com/5467
Reviewed-by: Mike Klein <mtklein@chromium.org>
Reviewed-by: Matt Sarett <msarett@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
1 file changed