Remove PackedID from the strike call chain

By removing the PackedID from the call chain, all the information
needed to lookup glyphs is gathered from the SkGlyph. I added some
code to allow this corrispondence between the SkGlyph and the PackedID.
But, in the next CL all that code will be removed as PackeID becomes
SkPackedGlyphID.

Remove unneeded inlines
Remove unused maskFormat parameter to getGlyph

Change-Id: Id6d876d7ad3f1b4303f8b9ecfc38f499fbedcf73
Reviewed-on: https://skia-review.googlesource.com/c/179640
Commit-Queue: Herb Derby <herb@google.com>
Reviewed-by: Jim Van Verth <jvanverth@google.com>
5 files changed