[Webkit-unassigned] [Bug 173946] New: REGRESSION Layout Test media/modern-media-controls/fullscreen-support/fullscreen-support-press.html is flaky

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=173946

            Bug ID: 173946
           Summary: REGRESSION Layout Test
                    media/modern-media-controls/fullscreen-support/fullscr
                    een-support-press.html is flaky
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: New Bugs
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: jlewis3 at apple.com

media/modern-media-controls/fullscreen-support/fullscreen-support-press.html is a flaky failure on Sierra WK2 Debug and has most recently had an extended timeout according to the Flakiness Dashboard.
https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=media%2Fmodern-media-controls%2Ffullscreen-support%2Ffullscreen-support-press.html

The Failures started after a re-baslining of the test and adjusted expectations. It seems these were primarily aimed at iOS Simulator.
https://trac.webkit.org/changeset/218231/webkit
The failures however, have inconsistent Diffs.

Currently the test had a timeout that lasted 101 seconds:
https://build.webkit.org/builders/Apple%20Sierra%20Debug%20WK2%20(Tests)/builds/1787
https://build.webkit.org/results/Apple%20Sierra%20Debug%20WK2%20(Tests)/r218886%20(1787)/results.html

Diff for timeout:
--- /Volumes/Data/slave/sierra-debug-tests-wk2/build/layout-test-results/media/modern-media-controls/fullscreen-support/fullscreen-support-press-expected.txt
+++ /Volumes/Data/slave/sierra-debug-tests-wk2/build/layout-test-results/media/modern-media-controls/fullscreen-support/fullscreen-support-press-actual.txt
@@ -1,10 +1,5 @@
-Testing the FullscreenSupport behavior when clicking the fullscreen button.
+#PID UNRESPONSIVE - com.apple.WebKit.WebContent.Development (pid 20338)
+FAIL: Timed out waiting for notifyDone to be called

-On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
-
-
-PASS media.webkitDisplayingFullscreen is true
-PASS successfullyParsed is true
-
-TEST COMPLETE
-
+#EOF
+#EOF

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