Rename SkSL::GLSLCapsFactory to SkSL::ShaderCapsFactory

Change-Id: Ibc478f1a24d9d96e4d67a907c756389d184857de
Reviewed-on: https://skia-review.googlesource.com/5316
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
5 files changed