tree e700d338a1fc41213d49d89a0f8b664d1b5c7444
parent 831c3ee73b3023a193e5390791c33adda0a37ae4
author Emilio Cobos Álvarez <emilio@crisal.io> 1528278541 +0000
committer moz-wptsync-bot <wptsync@mozilla.com> 1528373906 -0400

Ensure <slot> disables whitespace optimizations.

The whitespace optimization code only knows about the light tree.

It's not a great idea to try to put flattened tree children of a slot through
there, since the children may not be assigned to the same slot, or to any slot
(in which case we crash).

We should probably rename XBLInvolved to ShadowDOMOrXBLInvolved too, I guess.
Note that the ShadowRoot case already sets the bit on Init().

bugzilla-url: https://bugzilla.mozilla.org/show_bug.cgi?id=1465572
gecko-commit: d81a759c7d9557eff526c52f9c522be531aa0101
gecko-integration-branch: central
gecko-reviewers: bz