chromium/third_party/blink/manual_tests/crash-on-find-with-no-selection.html

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<p>This test can be used to verify that we do not crash when searching for text on a page when nothing on the page is currently selected.</p>
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    <li>Ensure that you have not clicked anywhere on this page and that nothing on this page is currently selected.</li>
    <li>Search for the word &quot;crash&quot; in this page (In Safari for Mac, select Edit->Find->Find or press Cmd-F on your keyboard to open the Find banner to search for a word in the page).
    <li>This test PASSED if we do not crash and the word &quot;crash&quot; is highlighted in at least the first sentence on this page.</li>
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