Implement Document.referrer
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Clean up task sources and make all tasks cancellable
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This makes it so each task is a thin wrapper over a runnable and whenever a task is queued, it is automatically wrapped by the window's `runnable_wrapper`.
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Added tests for cross-origin iframe parentage.
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Added (currently failing) tests for cross-origin iframe parentage.
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Added test for whether only fully active documents contribute to the joint session history
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The spec https://html.spec.whatwg.org/multipage/#joint-session-history says that only fully active documents contribute to the joint session history, but this appears not to be what's implemented.
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Adding:
* global event handlers,
* window event handlers,
* document and element handlers,
* and support for BeforeUnloadEvent.
Signed-off-by: Piotr Stankiewicz <bionicrift@gmail.com>
codegen: Fix dictionary handling and semantics
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Fixes#11152
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Implement basic <media> infrastructure
This gets us to the point where we can start playing with actually integrating rust-media to process the data received by the network request, as currently it's just ignored.
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