commit 3418c0e797e2ee841d1c031ca9d7a5ba73205f51
author msarett <msarett@google.com> Mon Jul 25 18:23:18 2016 -0700
committer Commit bot <commit-bot@chromium.org> Mon Jul 25 18:23:18 2016 -0700
tree 26d6c52936a8a6b9daacde97017d285b00bd04bc
parent 9ac6d8d9f16f8e1e523f677da4de5ebc9a2d8089

Delete SkDefaultXform, handle edge cases in SkColorSpaceXform_Base

"Edge" cases include:
(1) Matrices with translation
(2) colorLUTs

Performance on HP z620:

201295.jpg
to2Dot2: 386us -> 414us
toSRGB:  346us -> 371us
toHalf:  282us -> 302us

strange0-translate.jpg
toSRGB:  1060us -> 244us

strange1-colorLUT.jpg
toSRGB:  2.74ms -> 2.00ms

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2177173003
CQ_INCLUDE_TRYBOTS=master.client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot

Review-Url: https://codereview.chromium.org/2177173003