Change flag for Chrome/Edge headless mode in tests #15831
                
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User description
💥 What does this PR do?
This PR changes the flag for setting headless mode in Chrome/Edge from
--headless=newto--headlessin places where it was used in internal tests.Since Chrome 132, "new" headless mode is the default and
--headless=newwill eventually be removed.We should probably update the docs to mention this. Specifically:
🔄 Types of changes
PR Type
Tests
Description
Update headless flag to
--headlessfor Chrome/Edge testsRemove deprecated
--headless=newusage in test codeEnsure compatibility with Chrome 132+ headless mode changes
Changes walkthrough 📝
EdgeDriverFunctionalTest.java
Update Edge headless flag in functional testjava/test/org/openqa/selenium/edge/EdgeDriverFunctionalTest.java
--headless=newto--headlessin test.
Browser.java
Update headless flag for Chrome/Edge in driver optionsjava/test/org/openqa/selenium/testing/drivers/Browser.java
--headless=newto--headless.conftest.py
Use `--headless` for Chrome/Edge in Python test configpy/conftest.py
--headless=newto--headlessin test setup.