Revert "[pdf] Simplify filled paths"

This reverts commit 1810ba759efada3d3930af3087bff0f91bee613f.

Reason for revert: changes some users expectations, will need to stage.

Original change's description:
> [pdf] Simplify filled paths
>
> Bug: chromium:1449827
> Change-Id: If23b343c9ac13caf59a06c1cf68b33ccbe34e59c
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/717860
> Reviewed-by: Brian Osman <brianosman@google.com>
> Commit-Queue: Ben Wagner <bungeman@google.com>

Bug: chromium:1449827
Change-Id: Id988cbe5b21f420157f8cec70ac01862af1cf425
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/763418
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Auto-Submit: Ben Wagner <bungeman@google.com>
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
7 files changed