chore(vscode): Add VSCode recommended extensions
The provided `extensions.json` file is based on the one [in `mozilla‑central`][mozilla‑central‑vscode‑extensions].
[mozilla‑central‑vscode‑extensions]: https://hg.mozilla.org/mozilla-central/file/tip/.vscode/extensions.json
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Implement SwitchToWindow and DismissAlert WebDriver commands
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Let resources timing entries be added to performance entry buffer.
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Update relevant tests to properly report and expect failure.
These changes are the first step for #23328. Not sure if I would say they _fix_ the issue.
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Update Travis CI URLs
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Implement Status WebDriver command
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Fix panic on opening a directory
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Continued from https://github.com/servo/servo/pull/23548
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Implement GetPageSource WebDriver command
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Various improvements and update to the http cache
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Filter intermittent wdspec tests failures
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With this change, the intermittent failures for wdspec tests will be filtered and reported.
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Update remove_dir_all
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Fixed magicleap Servo2D application
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Sigh, of course the latest changes for immersive Servo on the ML1 broke the landscape app.
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Run wdspec tests in a different job
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