commit 244daaeddc80aaca2e2f323e81df8bed0632f782
author Daniel Solomon <solomondaniel@google.com> Sun Mar 17 17:30:41 2019 -0700
committer Daniel Solomon <solomondaniel@google.com> Tue Mar 19 14:57:30 2019 -0700
tree 7768dff64be818ca368d1577ed77232ffbab1dac
parent 40e9a201db163bf4593511a23a2ec4570c511c0b

Change Display White Balance to track the Planckian locus

Currently when DWB adjusts the display's white point it uses standard
Illuminant D to convert CCT to CIE xy coordinates. This causes a slight
green tint, detectable by some users. Change this behavior to calculate
CIE xy based on the Planckian locus.

Bug: 128712066
Test:
a. Manual, by overriding target DWB CCT and observing resulting target
xy coordinates
b. atest FrameworksServicesTests:ColorDisplayServiceTest, making sure
there are no new failures (existing failures tracked in a separate bug)

Change-Id: I6fa336ee694730df45d5eacceb442aa556b5718e