Add sample count field to GrD3DTextureResourceInfo.

Remove separate constructor arg from GrBackendRenderTarget.

Add appropriate checks in onWrap functions in GrD3DGpu to limit to
previous functionality.

Bug: skia:9832

Cq-Include-Trybots: luci.skia.skia.primary:Test-Win10-MSVC-Golo-GPU-QuadroP400-x86_64-Debug-All-Direct3D,Test-Win10-Clang-ShuttleA-GPU-RadeonHD7770-x86_64-Debug-All-Direct3D
Change-Id: Ieba398d4bc00d18fdb0adffcda81f1a166db24b3
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/320757
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
8 files changed