Remove BaseDevice class

This was left over from the initial attempt to split Ganesh into v1 and v2 versions. It is no longer needed w/ the move to Graphite.

This CL pretty much just folds BaseDevice into v1::Device.

Change-Id: I8fe180928b257c63f7ed3d58ac19d2ca454471dc
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/565996
Commit-Queue: Robert Phillips <robertphillips@google.com>
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
25 files changed