Change fallback for path glyphs to bulk api

This is a different approach to handling fallback, but it
ultimately simplifies handling fallback. If this works out,
the remote code will not have to use the GPU's fallback code.

Change-Id: I20b159f224771a4b900055ad33ae625f0cf210a4
Reviewed-on: https://skia-review.googlesource.com/154121
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Herb Derby <herb@google.com>
2 files changed