Use ipc router in webdriver
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Fix for https://github.com/servo/servo/issues/23905#issuecomment-522588119
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Support default toJSON in WebIDL
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Ported related lines from gecko.
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Implement TakeElementScreenshot WebDriver command
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Update servo-media. Remove implicit shutdown requests. It all happens…
… automagicly now
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Return ErrorStatus from webdriver_handlers
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With `webdriver 0.40`, `ErrorStatus` implements `Deserialize`. Now we can accommodate for multiple errors occuring in `webdriver_handlers`.
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Implement pointerDown and pointerUp webdriver actions
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Fix build error when using the 'webgl_backtrace' feature
This patch fixes a build error that happens when building with `--features webgl_backtrace`.
However, while working on this I've noticed that calling `Backtrace::new()` instantly causes a segmentation fault. This didn't happen with the example code of [the package](https://crates.io/crates/backtrace) though, so I wasn't sure where to report this (maybe related: [backtrace-rs/#150](https://github.com/rust-lang/backtrace-rs/issues/150), [backtrace-rs/#189](https://github.com/rust-lang/backtrace-rs/issues/189)).
cc @alexcrichton @jdm
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Initial Actions support in WebDriver
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ISSUE-21803: Implement ConstantSourceNode audionode
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More or less followed the steps outlined in `components/script/dom/mod.rs` (and also used the [previous PR](https://github.com/servo/servo/pull/23152) on this issue as reference). Updated `wpt` tests as well.
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