introduce SkCanvas::onDrawGlyphRunList

With this change, there is no need to produce a SkTextBlob when
using the drawGlyph, drawSimpleText, or drawString apis. These
calls just produce a light weight wrapper sending the wrapper
to onDrawGlyphRunList for rendering.

For recording, recording canvas converts the SkGlyphRunList into
a blob, and calls SkRecorder::onDrawTextBlob.

Remove unused call: drawPosTextCommon.

Change-Id: I173ba2793f74b521b33a6fb3dbd8d98945216a3b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/388719
Reviewed-by: Herb Derby <herb@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Herb Derby <herb@google.com>
9 files changed