Move compatible stencil tracking from GrGLCaps::fConfigTable to ::fFormatTable.

Also adds the following to the format table:

*base internal format
*sized internal format
*compressed internal format
*the internal format to use with glTexImage
*the external type to use with glTexImage when there is no data to upload
 (i.e., no GrColorType for data)

Bug: skia:6718


Change-Id: Ica51a8d4588bd24078c7d61805f6eef9c02ae14d
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/226558
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
4 files changed