XFAIL tst_QWebEngineFrame::setUrlHistory

Update the checks to cover the case where the count could be the same
with different URLs, and mark those checks as currently failing because
QtWebEngine doesn't have the logic preventing QUrl() to affect the
history.

Change-Id: Id0260d21d32d9e85fbd14f44536c2c93b6eb40b1
Reviewed-by: Michael Bruning <michael.bruning@digia.com>
XFAIL tst_QWebEnginePage::backActionUpdate

The test relies on events being propagated from the QWebEngineView to
its children. We should probably send those events directly to the
WebContentsAdapter to fix this kind of use case.

Change-Id: Ib5cc199fe8fc27c21603888b49334d1c1f71e575
Reviewed-by: Michael Bruning <michael.bruning@digia.com>