https://crbug.com/568691 has been succeeded by https://crbug.com/749848

Remove https://bugzilla.mozilla.org/show_bug.cgi?id=1282363
because CSSWG deemed Firefox's behavior to be the correct behavior per
https://github.com/w3c/csswg-drafts/issues/314

Replace it with a Chrome bug about changing Chrome to follow the spec & Firefox:
https://bugs.chromium.org/p/chromium/issues/detail?id=269061

* https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/817822/
* https://bugs.chromium.org/p/chromium/issues/detail?id=465274
* https://bugs.chromium.org/p/chromium/issues/detail?id=510079
* https://bugs.webkit.org/show_bug.cgi?id=158276

https://webkit.org/b/150079 has been fixed!
Refs #14975

[ci skip]

So update the Wall of Browser Bugs entry accordingly.

[ci skip]

It's fixed in Firefox 53! Yay!
Refs #12359
[ci skip]

Refs https://bugzilla.mozilla.org/show_bug.cgi?id=1315994
Refs #21092
[ci skip]

[ci skip]

Refs https://bugs.webkit.org/show_bug.cgi?id=162362
Closes #20759
[ci skip]

Refs https://bugs.chromium.org/p/chromium/issues/detail?id=510079
Closes #21120

[skip sauce]

https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/8282613/ has been marked as Fixed.
Refs #20335.

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Closes #20507

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https://bugzilla.mozilla.org/show_bug.cgi?id=504622
Refs #12359

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Refs https://bugzilla.mozilla.org/show_bug.cgi?id=1282363

[skip sauce]

Refs http://caniuse.com/#feat=css-nth-child-of
Refs https://drafts.csswg.org/selectors-4/#the-nth-child-pseudo
Refs https://crbug.com/304163
Refs https://bugzil.la/854148

[skip sauce]

So remove its entry from the Wall.
Refs #20012, #20024
Refs http://trac.webkit.org/changeset/202324

[ci skip]

Add Wall of Browser Bugs entries for #12832

So remove its entry from the Wall of Browser Bugs
Refs #15832

[skip sauce]
[skip validator]

Update Wall of Browser Bugs accordingly.
Refs #19670

[ci skip]

See https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/7787318/
Refs #19670

[skip sauce]

Refs https://developer.mozilla.org/en-US/docs/Web/CSS/:dir
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See https://bugzil.la/1278000
Refs #19670

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See https://bugzilla.mozilla.org/show_bug.cgi?id=1277782
Refs #19839

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See https://webkit.org/b/158342
Refs #17695.

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Refs https://webkit.org/b/158340
Closes #20012

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Refs https://crbug.com/597642
Closes #19810

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Refs https://webkit.org/b/158276
Closes #19927

[skip sauce]

Remove its entry from the Wall of Browser Bugs
Refs #16372

[skip sauce]

Remove its entry from the Wall of Browser Bugs.

[skip sauce]

Update the Wall of Browser Bugs entry accordingly.

[skip sauce]

Remove its entry from the Wall of Browser Bugs.
Refs #16180

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These bugs are factors in our decisions regarding which unit to use in our media queries.
Refs #17403
[skip sauce]

Refs #12536
[ci skip]