[Webkit-unassigned] [Bug 148533] New: REGRESSION (r188820): fast/dom/HTMLObjectElement/object-as-frame.html is flaky

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=148533

            Bug ID: 148533
           Summary: REGRESSION (r188820):
                    fast/dom/HTMLObjectElement/object-as-frame.html is
                    flaky
    Classification: Unclassified
           Product: WebKit
           Version: Other
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Page Loading
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ap at webkit.org
                CC: cdumez at apple.com, darin at apple.com, koivisto at iki.fi

fast/dom/HTMLObjectElement/object-as-frame.html become flaky after the patch for decoding data URLs in WebContent process.

This is hard to reproduce locally, but it happens frequently enough on bots 

I could sometimes reproduce on El Capitan by running tests like this:

run-webkit-tests fast/dom/HTMLObjectElement -f --repeat 100 --no-retry

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&showExpectations=true&revision=188926&tests=fast%2Fdom%2FHTMLObjectElement%2Fobject-as-frame.html

@@ -4,5 +4,5 @@
 Loading 'data:text/html,Updated contents of iframe' in iframe...
 Loading 'data:text/html,Updated contents of object' in object...
 PASS window.frames[0].location.toString() is "data:text/html,Updated contents of iframe"
-PASS window.frames[1].location.toString() is "data:text/html,Updated contents of object"
+FAIL window.frames[1].location.toString() should be data:text/html,Updated contents of object. Was data:text/html,New contents of frame.

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