This code has rotted a bit. The glyph off set is now calculated
by mapping (0,0) through the current matrix, and the initial
matrix, and taking the vector difference. Residual is no longer
needed and all the plumbing can be removed.
Change-Id: I20b56afc6749fd26fe283a7ff22f38951da0e6f5
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/335823
Reviewed-by: Robert Phillips <robertphillips@google.com>
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Herb Derby <herb@google.com>
90f211f46b