This leaves getAdjustedQuads alone because it lives in its own world and its
result gets sent over IPC. That leaves things in a bit of an intermediate state,
but that should be OK for now.
Backported from Mozilla bug 1186265.
Some hoops to make sure the test still works if the default value for the pref
is false, requiring setting and resetting it and making sure the observers have
time to react to these changes before testing.
This actually keeps both pseudo-elements for now, since the prefixed version is
still used internally, but we need the unprefixed version for web compat.
Note: while unprefixing a non-spec-compliant pseudo here, it's exactly in line
with what other browsers do. Nobody is following the spec here and at least
we'll be doing what everyone else is with our unprefixed version.
Since these are just interpreted comments, there's 0 impact on actual code.
This removes all lines that match /* vim: set(.*)tw=80: */ with S&R -- there are
a few others scattered around which will be removed manually in a second part.