hilla
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Fusion: Add helper methods for simulate online/offline in ChromeDeviceTest
After we have a new TestBench version with Selenium 4 (https://github.com/vaadin/testbench/issues/1279), we should add helper methods in ChromeDeviceTest to simulate the online/offline situations as described in vaadin/flow#9314. The false-negative IT test in vaadin/flow#9314 should be updated to use the new helpers.