Make rest of GrGpu::wrapBackend* methods take a GrColorType

This CL is intended to further wean Ganesh off of using the GrBackendTexture's pixel config

Bug: skia:6718
Change-Id: I593c0c73922fb76045e379214e20adb1f17ea215
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/227780
Commit-Queue: Robert Phillips <robertphillips@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
50 files changed