webgl: FBO support preparation
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Sending this PR now so that we can get the webrender patches merged. This is prep for the webgl-fbo series, with one small fix for some conformance tests.
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Decode UTF-8 with from_utf8_lossy in DedicatedWorkerGlobalScope
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Fix Issue 12343: Add pref-gated methods and test for activatable element
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Add methods to activatable elements; gated by a preference, for use in servo-specific WPT tests.
I cargo-culted over the "redundant check" from #12322, I don't really understand the possible exploit.
Obvious flaw is the copypasta for each element. I understand that the webidl codegen will produce a trait for ActivatableElement, but I can't see how I can provide a default implementation for this? I guess otherwise could be an improvement to have each element just delegate to an Enter.../Exit... method on the Activatable trait?
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…states
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Fix most typoes for: "referer" -> "referrer"
Replace most uses of the word "referer" with "referrer", except for `hyper::header::Referer`. Also update the unit tests to compile & pass after those changes.
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DOMMatrix and DOMMatrixReadOnly
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Make DOMTokenList Iterable
Make DOMTokenList Iterable.
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Implement postMessage for ServiceWorkers
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Fixes#12773
r? @jdm
Changes:
* Implements `postMessage` on `ServiceWorker` object.
* Removes unused channels from sw and their scopes.
* Fixes a crash when calling `scope.script_chan()` in sw-scopes event handling.
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