This reverts commit 5fe4b6faeb.
Reason for revert: relanding with guards
Original change's description:
> Revert "[skottie] Fix text-on-path tracking"
>
> This reverts commit ca973cbea0.
>
> Reason for revert: g3 image diffs
>
> Original change's description:
> > [skottie] Fix text-on-path tracking
> >
> > Tracking and line spacing computations require knowledge of cumulative
> > values for the whole line => we need two passes:
> >
> > 1) compute cumulative values
> > 2) compute per-fragment position adjustments
> >
> > Currently, #1 is implemented in the main onSync() loop (as we iterate
> > to compute fragment props) and #2 is post-applied via adjustLineProps(),
> > after the main loop.
> >
> > The problem is adjustLineProps() is executed after positioning glyphs on
> > path, and tracking is not taken into account for path positioning
> > (instead it moves glyphs horizontally, unrelated to the path).
> >
> > To fix this, we need tracking adjustments to be applied before
> > positioning on path (which is performed in fragmentMatrix()).
> >
> > - move the cumulative tracking computation to a dedicate lambda
> > (compute_linewide_props)
> > - move the fragment position adjustments to the main onSync() loop
> > (that way they participate in path positioning)
> > - to avoid executing the first pass unnecessarily, add flags to detect
> > the presence of tracking and line spacing animators.
> >
> >
> > Change-Id: Ieef2afb53ffe14177eba0ef41dc5c71149cab070
> > Reviewed-on: https://skia-review.googlesource.com/c/skia/+/518696
> > Reviewed-by: Ben Wagner <bungeman@google.com>
> > Commit-Queue: Florin Malita <fmalita@chromium.org>
> > Commit-Queue: Florin Malita <fmalita@google.com>
>
> Change-Id: Ia99fbb3d7d98eb6a59ff00d796bcc05bc6db63a3
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/519597
> Auto-Submit: Florin Malita <fmalita@google.com>
> Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
> Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Change-Id: Ia39602178099d7fa016997f02e1bdf705b16bb2e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/519598
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Florin Malita <fmalita@google.com>
1df655a427