SkVector4 as ctype for half4

Use in GrColorMatrixFragmentProcessor.

Also make GrColorMatrixFragmentProcessor::Make() call
SkMatrix44::set4x4().


9bf803677ea133368178e1eb23e120dd823da151

Bug: skia:8962
Change-Id: I2476f4af03b4e43cc843e6eda28673d1c2454acc
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/217496
Commit-Queue: Brian Osman <brianosman@google.com>
Auto-Submit: Brian Salomon <bsalomon@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
9 files changed