Reland of Add test for previously unflattenables (patchset #1 id:1 of https://codereview.chromium.org/1532753002/ )
Reland of Add test for previously unflattenables (patchset #1 id:1 of https://codereview.chromium.org/1532753002/ )

Reason for revert:
The test should now be blacklisted.

Original issue's description:
> Revert of Add test for previously unflattenables (patchset #1 id:1 of https://codereview.chromium.org/1514373003/ )
>
> Reason for revert:
> Speculative fix for skbug.com/4709
>
> Original issue's description:
> > Add test for previously unflattenables
> >
> > BUG=skia:4613
> >
> > Committed: https://skia.googlesource.com/skia/+/061aaa79f7d8a2e93962e8296abaae13f0a7a715
>
> TBR=halcanary@google.com
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=skia:4613
>
> Committed: https://skia.googlesource.com/skia/+/c8f969309cafebeb16ad057f766b61bdc406a8b8

TBR=halcanary@google.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:4613

Review URL: https://codereview.chromium.org/1535143002

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