SkQP: fix five tests

set `skia_use_expat` to true:
  - coloremoji_blendmodes
  - scaledemoji
  - scaledemojipos

disable bad tests:
  - arcs_as_paths
  - ovals_as_paths

Change-Id: I883cf13f54b424b8d3964fc045bd6282cbc028c9
Reviewed-on: https://skia-review.googlesource.com/c/196644
Reviewed-by: Ben Wagner <bungeman@google.com>
3 files changed