Implement document load cancellation
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"./mach env" cause unclear message.
We did't use "LD_LIBRARY_PATH" and no need display this.
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Remove the print message.
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Adjust import path for WPT tests to accommodate upstream.
This should avoid the ongoing issues where new dependencies are vendored upstream and our setup throws exceptions when some code tries to import them.
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If we have a rotate axis whose length is extremely large, we will get an
infinite value, and its normalized vector is a zero vector, instead of an
unit vector, i.e. (x/inf, y/inf, z/inf) == (0, 0, 0).
The solution is: we scale the vector, so the length becomes a finite value, and
we could get a valid unit vector.
Therefore, we use a different normalization method, robust_normalize().
Bug: 1467277
Reviewed-by: hiro
This fixes a couple fuzz bugs and prevents special-casing <svg:use> even more in
bug 1431255.
Unfortunately not as many hacks went away as I'd have hoped, since we still need
to match document rules, see the linked SVGWG issues.
But blocks_ancestor_combinators goes away, which is nice since it's on a very
hot path.
Bug: 1450250
Reviewed-by: heycam
Differential Revision: https://phabricator.services.mozilla.com/D2154
MozReview-Commit-ID: C4mthjoSNFh
