[iOS Simulator Debug] LayoutTest/fast/hidpi/filters-and-image-buffer-resolution.html is flaky.

[Matt Lewis]

The test fast/hidpi/filters-and-image-buffer-resolution.html is a flaky Image Only Failure.

History:
https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=fast%2Fhidpi%2Ffilters-and-image-buffer-resolution.html

Build:
https://build.webkit.org/builders/Apple%20iOS%2010%20Simulator%20Debug%20WK2%20(Tests)/builds/1244
https://build.webkit.org/results/Apple%20iOS%2010%20Simulator%20Debug%20WK2%20(Tests)/r216616%20(1244)/results.html

First failure on the Dashboard is on 4/25/2017
initial introduction https://trac.webkit.org/changeset/202421/webkit

Attempted to reproduce locally, passed all runs of test.

[Matt Lewis]

Marked test as flaky on debug.
https://trac.webkit.org/changeset/216633/webkit/

[Alexey Proskuryakov]

Actual result lacks text.

[Ryan Haddad]

This test no longer fails on iOS, but it fails in a different way on macOS (filed https://bugs.webkit.org/show_bug.cgi?id=187491)

[Truitt Savell]

Changed test expectations. Removed iOS expectations from this test and addressed Mac expectations in https://bugs.webkit.org/show_bug.cgi?id=187491.

[Radar WebKit Bug Importer]

<rdar://problem/41997037>