Update checking origin trustworthy align to spec
While reading the [spec of ` Is origin potentially trustworthy? `](https://w3c.github.io/webappsec-secure-contexts/#is-origin-trustworthy), I found our second step is wrong; then, I found Josh said we didn't check it with `https` because we didn't support https in tests yet (https://github.com/servo/servo/pull/13574#discussion_r89346191).
IIRC, we've supported https wpt tests now so it might be fine to change it to align with spec.
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Do not filter out platform objects when doing dictionary conversions in overload resolution
https://heycam.github.io/webidl/#es-overloads
In step 12, the platform object check is for substep 4, but importantly it only matters if `V` implements the matching interface. If not, it should be able to fall back to substep 10 and attempt conversion to a dictionary.
Remove WebVR
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Removes support for WebVR. WebXR is our future!
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Update parse_length to match spec
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Don't send empty canvases to WebRender
If any dimension of a canvas is 0, don't try to display it as it causes
problems inside webrender.
Minimal test case available here: https://github.com/servo/servo/issues/21411#issuecomment-605226547
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Avoid infinitely looping CSS transitions.
This change addresses the long-standing issue of CSS transitions not ending appropriately. It does not fundamentally change the way we process transitions/animations.
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Fix tojson unconditionally serializes
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Fix failing assertion -- failure to pop reference frame
closes#23438
In-depth description here: https://github.com/servo/servo/issues/23438#issuecomment-605553001
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Implementation for ImageBitmap
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Created the boilerplate code for the image bitmap implementation.
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