Remove gamma correction from color correction shader

Gamma correction was incorrectly skewing both color inversion and
Daltonization, which resulted in washed-out colors.

Bug: 20346301
Change-Id: I34d879f902c3be115b2d23f09c3ed3902799759e
(cherry picked from commit 3acd9f1d8fdffc0ed0837ebbabcac0c4014015b3)
1 file changed