Cleanup of default ciphersuite list
* don't offer DHE ciphersuites like Chrome (Firefox is in [progress](https://www.fxsitecompat.com/en-CA/docs/2018/dhe-cipher-suites-are-no-longer-supported-in-webrtc/) of deprecating DHE as well)
* don't offer AES-CBC-SHA2 like Firefox and Chrome
* don't offer AES-GCM for plain RSA like Firefox
* don't offer ECDSA with AES-CBC like Chrome
* don't offer weak DES-CBC3-SHA
* prefer AES256 over AES128 like [Mozilla Modern](https://wiki.mozilla.org/Security/Server_Side_TLS#Modern_compatibility), Safari and Edge
(The last line of cipher suites would be removed in the future when Servo deprecates TLS 1.0/1.1 and switches to Rustls.)
You can compare Firefox and Chrome with https://www.ssllabs.com/ssltest/viewMyClient.html.
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Fix DuckDuckGo HTML search
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- [x] These changes fix#22090
- [x] There are tests for these changes
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Revert "Move linux WPT from Buildbot to Taskcluster"
This reverts commit e60e534d23.
We haven't been able to merge anything for several days, and my investigations have not shown me a solution yet. Let's revert this change; I can continue experimenting in try builds without holding up the rest of our CI queue.
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Move macOS WPT chunk 1 (only) from Buildbot to Taskcluster
This is only one chunk at a time so that we don’t need to double the number of worker nor the cycle time during the migration.
A release build takes ~40 minutes which seems worrying, but this also happens (sometimes) on Buildbot. For example: https://build.servo.org/builders/mac-rel-wpt1/builds/10401
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Initialize iframe viewport immediately
This is probably a significant cause of unstable test results, and it finally bothered me enough to fix it. The solution isn't great for performance (a sync layout query every time a iframe is added to a document), but performance needs to follow correctness.
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- [x] These changes fix#14364 and fix#15689 and fix#15688.
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Unregister components while exiting
r=@gterzian
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The following IDLs have the src/href attributes typed as a DOMString
while in the spec the attribute has been updated to be a USVString:
- HTMLIFrameElement
- HTMLImageElement
- HTMLInputElement
- HTMLLinkElement
- HTMLMediaElement
- HTMLScriptElement
