Rename SkGlyphCache -> SkStrike

Change-Id: I51ca9f61feb0d4f7352ed634b7070327f31ccf05
Reviewed-on: https://skia-review.googlesource.com/c/184400
Reviewed-by: Ben Wagner <bungeman@google.com>
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Herb Derby <herb@google.com>
38 files changed