imported/w3c/web-platform-tests/IndexedDB/idbdatabase-createObjectStore-exception-order.htm is a flaky failure

[Matt Lewis]

The test imported/w3c/web-platform-tests/IndexedDB/idbdatabase-createObjectStore-exception-order.htm is a flaky failure on El Capitan Release wk1 and wk2 as well as Sierra Release wk1 and iOS simulator wk2.

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=imported%2Fw3c%2Fweb-platform-tests%2FIndexedDB%2Fidbdatabase-createObjectStore-exception-order.htm

imported with: https://trac.webkit.org/changeset/212202/webkit

https://build.webkit.org/results/Apple%20El%20Capitan%20Release%20WK1%20(Tests)/r216992%20(1744)/results.html
https://build.webkit.org/builders/Apple%20El%20Capitan%20Release%20WK1%20(Tests)/builds/1744

diff:
--- /Volumes/Data/slave/elcapitan-release-tests-wk1/build/layout-test-results/imported/w3c/web-platform-tests/IndexedDB/idbdatabase-createObjectStore-exception-order-expected.txt
+++ /Volumes/Data/slave/elcapitan-release-tests-wk1/build/layout-test-results/imported/w3c/web-platform-tests/IndexedDB/idbdatabase-createObjectStore-exception-order-actual.txt
@@ -1,5 +1,7 @@
 
-PASS IDBDatabase.createObjectStore exception order: InvalidStateError vs. TransactionInactiveError 
+Harness Error (TIMEOUT), message = null
+
+TIMEOUT IDBDatabase.createObjectStore exception order: InvalidStateError vs. TransactionInactiveError Test timed out
 PASS IDBDatabase.createObjectStore exception order: TransactionInactiveError vs. SyntaxError 
 FAIL IDBDatabase.createObjectStore exception order: SyntaxError vs. ConstraintError assert_throws: "Invalid key path" check (SyntaxError) should precede "duplicate store name" check (ConstraintError) function "() => {
       db.createObjectStore('s', {keyPath: 'not a valid key path'});

[Ryan Haddad]

Marked test as flaky in https://trac.webkit.org/r227186.

[Sihui Liu]

*** This bug has been marked as a duplicate of bug 228169 ***