Device interface uses glyph run list

Have devices just treat all runs as drawPosText except
for SkGPUDevice and SkRemoteGlyphCache. Those two
just pass the blob to the old code. This way the
change over from blobs to run lists can happen in smaller
steps.

Change-Id: I3407bffeafe7fbd1c369f6b3c3db8d64b4b6c3b1
Reviewed-on: https://skia-review.googlesource.com/141300
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Herb Derby <herb@google.com>
11 files changed