A bit of a wallpaper, but it's silly to crash with a null deref here. If
there's no selection there's nothing to invalidate really.

We already null-check it effectively when aOverrideNode is null.

Differential Revision: https://phabricator.services.mozilla.com/D97960

Differential Revision: https://phabricator.services.mozilla.com/D98191

Differential Revision: https://phabricator.services.mozilla.com/D97999

Differential Revision: https://phabricator.services.mozilla.com/D97878

Differential Revision: https://phabricator.services.mozilla.com/D95091

Differential Revision: https://phabricator.services.mozilla.com/D95087

Bug 1673770 - Extend the handling of fstatat-as-fstat to sandboxes that don't use a file broker. r=gcp, a=RyanVM

The fix for bug 1660901, to handle the subset of fstatat that is
equivalent to fstat, was incomplete: it was added to the existing
hook for the file broker, so processes that don't use a broker (like
GMP) didn't get the fix.  That wasn't a problem when the only use of
that feature was in content processes via GTK, but now that glibc has
reimplemented fstat that way, it's necessary for all processes.

Differential Revision: https://phabricator.services.mozilla.com/D95108

Differential Revision: https://phabricator.services.mozilla.com/D97589

No bug - Tagging d482421dc3fe22020f2c57f573ed902f6d302ffa with FIREFOX_78_5_0esr_RELEASE a=release CLOSED TREE DONTBUILD

Bug 1643798 - Fix feature policy check for fullscreen so that it gets reflected properly in document.fullscreenEnabled. r=baku, a=RyanVM

See bug 1606660 comment 8 as to why checking it only in
Element.requestFullscreen is wrong.

Do you know how to test this? I'm not very familiar with feature-policy.

Differential Revision: https://phabricator.services.mozilla.com/D78567

Sandbox policies handle the case of `fstatat(fd, "", AT_EMPTY_PATH|...)`
by invoking the SIGSYS handler (because seccomp-bpf can't tell if the
string will be empty when the syscall would use it), which makes the
equivalent call to `fstat`.

Unfortunately, recent development versions of glibc implement `fstat` by
calling `fstatat`, which causes unbounded recursion and stack overflow.
(This depends on the headers present at build time; see the bug for more
details.)  This patch switches it to use the `fstat` (or `fstat64` on
32-bit) syscall directly.

Differential Revision: https://phabricator.services.mozilla.com/D94798

Bug 1649005 - fix crash when rewrapping an empty message via mozilla::HTMLEditor::InsertTextWithQuotationsInternal. r=masayuki, a=RyanVM

If empty input, aStringToInsert.First() will crash at https://searchfox.org/mozilla-central/rev/c2e3ac11be4837718c2604e58085fbc8252b69dd/xpcom/string/nsTSubstring.cpp#968

Needed to adjust whether rewrap needs beforeinput handling:
NeedsBeforeInputEventHandling would return false, because rewrap was set not to need that
https://searchfox.org/mozilla-central/rev/803b368879fa332e8e2c1840bf1ec164f7ed2c32/editor/libeditor/EditorBase.h#1152
.. so EditorBase::AutoEditActionDataSetter::MaybeDispatchBeforeInputEvent would assert

rewrap also needs to be allowed for MayEditActionDeleteSelection (not to assert)

Differential Revision: https://phabricator.services.mozilla.com/D93167

We can clean up this code once the feature policy pref goes away, but
meanwhile this should do the right thing.

Differential Revision: https://phabricator.services.mozilla.com/D97162

No bug - Tagging d482421dc3fe22020f2c57f573ed902f6d302ffa with FIREFOX_78_5_0esr_BUILD1 a=release CLOSED TREE DONTBUILD

Bug 1450309 - Switch WebsiteFilter to nsIContentPolicy and allow blocking local files. r=emalysz, a=RyanVM

Differential Revision: https://phabricator.services.mozilla.com/D91487

Differential Revision: https://phabricator.services.mozilla.com/D94205

Bug 1673196 - NewPasswordModel: Don't assume @aria-labelledBy refers to an ID present in the document. r=sfoster a=RyanVM

Differential Revision: https://phabricator.services.mozilla.com/D94687

Differential Revision: https://phabricator.services.mozilla.com/D96421

No bug - Tagging 22b8bef3c436a4d36b586804f342928e1ab11e51 with FIREFOX_78_4_1esr_RELEASE a=release CLOSED TREE DONTBUILD

No bug - Tagging 22b8bef3c436a4d36b586804f342928e1ab11e51 with FIREFOX_78_4_1esr_BUILD1 a=release CLOSED TREE DONTBUILD

Differential Revision: https://phabricator.services.mozilla.com/D96309

Bug 1670280 - Enable clearkey-mp4-playback-temporary-multikey-sequential-readyState.https.html and clearkey-mp4-update-disallowed-input.https.html on Linux. r=jbauman, a=test-only

Differential Revision: https://phabricator.services.mozilla.com/D93099

The falseExpr of LWasmSelect may not be register value on mips,
we shouldn't just use it as a register.

Differential Revision: https://phabricator.services.mozilla.com/D95985

Differential Revision: https://phabricator.services.mozilla.com/D95745

When responding with a script, the correct Content-Type header must be
set.

Differential Revision: https://phabricator.services.mozilla.com/D94902

Differential Revision: https://phabricator.services.mozilla.com/D68904

Differential Revision: https://phabricator.services.mozilla.com/D95740

Differential Revision: https://phabricator.services.mozilla.com/D93319

Depends on D95414

Differential Revision: https://phabricator.services.mozilla.com/D95415

Bug 1672528 - Check IPv4-mapped IPv6 addresses for being local. r=dragana,necko-reviewers, a=jcristau

Differential Revision: https://phabricator.services.mozilla.com/D95414

Bug 1669466 - Change WebRequestService singleton to a StaticRefPtr. r=glandium,mixedpuppy, a=jcristau

Differential Revision: https://phabricator.services.mozilla.com/D94692

Differential Revision: https://phabricator.services.mozilla.com/D96055

Differential Revision: https://phabricator.services.mozilla.com/D93442