Return false when GetPropertyKeys fails
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As stated in https://github.com/servo/servo/pull/24377#discussion_r333844560.
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Support WebIDL `record<>`
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Rebased @taki-zaro's work (#20318).
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Update malloc_size_of_derive
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Various XR fixes
Mostly making sure we expose the correct things on the XRSession interface.
No backend currently supports visibility state changes, and it's tricky to do this for Hololens because currently we must pump the event loop to notice these events, and only rAF pumps the event loop right now, which means that applications which choose to stop running rAF when blurred will have a problem.
r? @jdm
Sync WPT with upstream (11-10-2019)
Automated downstream sync of changes from upstream as of 11-10-2019.
[no-wpt-sync]
r? @servo-wpt-sync
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Dom response check opaque filter
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Added setters for url_list, status, and body in `Response`. Response members are set for [Network Error](https://fetch.spec.whatwg.org/#concept-network-error), [Opaque](https://fetch.spec.whatwg.org/#concept-filtered-response-opaque) and [Opaque-redirect](https://fetch.spec.whatwg.org/#concept-filtered-response-opaque-redirect) responses.
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Create a zip of all UWP packaging artifacts.
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Add secure connection start
Implementing `secure_connection_start` as well as we can, this is related to #21268
We are setting the value as well as we can since we don't have a way to know if we are currently using a secure transport or where the handshake before the connection is done as the spec says on the step 15 [https://w3c.github.io/resource-timing/#sec-process](https://w3c.github.io/resource-timing/#sec-process)
Regarding the Timing Allow Check, that's being done on another PR by another person which will take care of setting the rest of the values on `PerformaceResourceTiming` to Zero and prevent them to set them any other way.
I'm currently setting the `secure_connection_time` using `precise_time_ms()` as the `connection_start` and `connection_end` are set that way... but other attributes inside `PerformanceResourceTiming` are set using `precise_time
Another thing, the issue talks about setting `redirect_start` but I'm not really sure if it's related, if so I can look up into that too... I might have just read and thought it was all about secure connection start.
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don't send progress event for empty blob
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webgl: Clear the drawing buffer when preserveDrawingBuffer is false.
This adds an explicit clear operation to a webgl canvas when the preserveDrawingBuffer attribute is false when creating the context. Because we're not using double buffering this may end up making some demos worse (ie. a clear operation at a random time while drawing a frame), but this problem is expected to go away when #24256 is fixed and we move to a multi-buffered frame setup. This change is important at this time because so many babylon.js demos rely on the engine clearing the frame, per the specification.
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