Reland "added 565 to 8888 conversion for gpu LCD text rendering for macOS"

This reverts commit cf274da6faa9d32e08053180c8113fcaab666028.

Reason for revert: removed the static initializer

Original change's description:
> Revert "added 565 to 8888 conversion for gpu LCD text rendering for macOS"
>
> This reverts commit e6f2ecafaf0efecacfd4256f280e26ee74cb7e16.
>
> Reason for revert: breaking chrome roll cause of static initializers
>
> Original change's description:
> > added 565 to 8888 conversion for gpu LCD text rendering for macOS
> >
> > Bug: skia:
> > Change-Id: Ie24160bb098d388bf4ad69d0c2f9f8ed4beb215c
> > Reviewed-on: https://skia-review.googlesource.com/134508
> > Commit-Queue: Timothy Liang <timliang@google.com>
> > Reviewed-by: Jim Van Verth <jvanverth@google.com>
>
> TBR=egdaniel@google.com,jvanverth@google.com,timliang@google.com
>
> Change-Id: Ida97a4085c93fcb990999ab71f99364ec2ef86b7
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Bug: skia:
> Reviewed-on: https://skia-review.googlesource.com/135000
> Reviewed-by: Greg Daniel <egdaniel@google.com>
> Commit-Queue: Greg Daniel <egdaniel@google.com>

Change-Id: I40c29b73970c55b3579a0169bbad666a798b2348
Bug: skia:
Reviewed-on: https://skia-review.googlesource.com/135021
Reviewed-by: Jim Van Verth <jvanverth@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Timothy Liang <timliang@google.com>
5 files changed