Ran locally `./mach taskgraph cron --head-repository=https://hg.mozilla.org/mozilla-central --project=mozilla-central --level=1` and got no errors:
```
 0:00.54 using current time for params['time']; try setting $CRON_TIME to a timestamp
 0:00.54 calculated cron schedule time is 2019-05-27 09:30:00
 0:00.56 not running cron job bouncer-check
 0:00.56 not running cron job chromium-update
 0:00.56 not running cron job customv8-update
 0:00.56 not running cron job nightly-android
 0:00.56 not running cron job nightly-desktop
 0:00.56 not running cron job nightly-desktop-linux
 0:00.56 not running cron job nightly-desktop-osx
 0:00.56 not running cron job nightly-desktop-win32
 0:00.56 not running cron job nightly-desktop-win64
 0:00.56 not running cron job nightly-desktop-win64-aarch64
 0:00.56 not running cron job periodic-update
 0:00.56 not running cron job pipfile-update
 0:00.56 not running cron job searchfox-index
** 0:00.56 not running cron job tp6m-fennec-v64**
```
Feel free to add to this review whoever is relevant.

Differential Revision: https://phabricator.services.mozilla.com/D32674

--HG--
extra : moz-landing-system : lando

Bug 1545410 - part 2: Add telemetry probe to decide when we can remove the hack for Office Online Server data-review=liuche, r=smaug

Differential Revision: https://phabricator.services.mozilla.com/D32288

--HG--
extra : moz-landing-system : lando

Differential Revision: https://phabricator.services.mozilla.com/D33015

--HG--
extra : moz-landing-system : lando

Bug 1556335 - Remove testing/web-platform/meta/fetch/api/redirect/redirect-mode.any.js.ini, r=annevk

Differential Revision: https://phabricator.services.mozilla.com/D33465

--HG--
extra : moz-landing-system : lando

Bug 1533084 - [marionette] Skip test_set_orientation_portrait_secondary on Android for Fennec failures. r=webdriver-reviewers,ato

Differential Revision: https://phabricator.services.mozilla.com/D33493

--HG--
extra : moz-landing-system : lando

Depends on D33339

Differential Revision: https://phabricator.services.mozilla.com/D33340

--HG--
extra : moz-landing-system : lando

Depends on D33338

Differential Revision: https://phabricator.services.mozilla.com/D33339

--HG--
extra : moz-landing-system : lando

A few small changes are required to backport the updated windows capture code
to our version of webrtc.org. These are largely path changes, but
DetachFromThread has been renamed to Detach, and they seem to have a working
overload for ostream operator<< for VideoType that I have not been able to
track down. It is also necessary to add our local modification for pid_t back
to the GetDeviceName method, but it is not used for video capture anyways.

Depends on D33337

Differential Revision: https://phabricator.services.mozilla.com/D33338

--HG--
extra : moz-landing-system : lando

This was added in commit 74395345e8d2fecd504cb687eb79deee4ef394c3, but this
only cherry picks the ToHex part of that commit.

Depends on D33336

Differential Revision: https://phabricator.services.mozilla.com/D33337

--HG--
extra : moz-landing-system : lando

This updates just video_capture/windows to the tip of webrtc.org, from commit
8581877121f58435d683c2a39a73e72e5dcd558a.

This removes the locking which was leading to the deadlock in Bug 1552755. It
also removes the reliance upon the DirectShow example code which lead to our
local implementations of BaseFilter, BaseInputPin, BasePin, and MediaType.
These can now be removed.

Differential Revision: https://phabricator.services.mozilla.com/D33336

--HG--
extra : moz-landing-system : lando

Differential Revision: https://phabricator.services.mozilla.com/D33017

--HG--
extra : moz-landing-system : lando

Differential Revision: https://phabricator.services.mozilla.com/D33481

--HG--
extra : moz-landing-system : lando

This cherry-picks https://github.com/servo/servo/pull/23463 with a few fixes for
the Gecko build.

This patch will block mitmproxy from making upstream requests to
negotiate ALPN. We force ALPN locally and intercept requests made
upstream.

Differential Revision: https://phabricator.services.mozilla.com/D31042

--HG--
extra : moz-landing-system : lando

Since isPropertyUsed takes an HTMLElement and its computed style, we
need to have access to the DOM, and can't use an xpcshell test.

Differential Revision: https://phabricator.services.mozilla.com/D33454

--HG--
extra : moz-landing-system : lando

Backed out changeset 351d19c8bdd3 (bug 1395509)
Backed out changeset d361c289aaa9 (bug 1555935)
Backed out changeset fdb574e1fca6 (bug 1555935)

Differential Revision: https://phabricator.services.mozilla.com/D33425

--HG--
extra : moz-landing-system : lando

Ugh, I accidentally introduced this in bug 1523071. :(

Differential Revision: https://phabricator.services.mozilla.com/D33434

--HG--
extra : moz-landing-system : lando

Migrating to pure Cpp

Differential Revision: https://phabricator.services.mozilla.com/D29221

--HG--
extra : moz-landing-system : lando

Bug 1395509 - Add APIs to handle memory accounting while initializing object pointers to malloc memory r=sfink?

Depends on D33313

Differential Revision: https://phabricator.services.mozilla.com/D33314

--HG--
extra : moz-landing-system : lando

Carrying on from the last patch, there is one place where we use FreeOp unnecessarily when we're not finalizing.

Depends on D33276

Differential Revision: https://phabricator.services.mozilla.com/D33313

--HG--
extra : moz-landing-system : lando

Differential Revision: https://phabricator.services.mozilla.com/D33276

--HG--
extra : moz-landing-system : lando

Differential Revision: https://phabricator.services.mozilla.com/D32052

--HG--
rename : browser/components/aboutlogins/tests/mochitest/aboutlogins_common.js => browser/components/aboutlogins/tests/chrome/aboutlogins_common.js
rename : browser/components/aboutlogins/tests/mochitest/mochitest.ini => browser/components/aboutlogins/tests/chrome/chrome.ini
rename : browser/components/aboutlogins/tests/mochitest/test_login_filter.html => browser/components/aboutlogins/tests/chrome/test_login_filter.html
rename : browser/components/aboutlogins/tests/mochitest/test_login_item.html => browser/components/aboutlogins/tests/chrome/test_login_item.html
rename : browser/components/aboutlogins/tests/mochitest/test_login_list.html => browser/components/aboutlogins/tests/chrome/test_login_list.html
rename : browser/components/aboutlogins/tests/mochitest/test_modal_input.html => browser/components/aboutlogins/tests/chrome/test_modal_input.html
rename : browser/components/aboutlogins/tests/mochitest/test_reflected_fluent_element.html => browser/components/aboutlogins/tests/chrome/test_reflected_fluent_element.html
extra : moz-landing-system : lando

Since unscoped enums implicitly convert to underlying types, we don't have to change everything at once. It is worth enough to introduce auto-numbering, IMO.

Differential Revision: https://phabricator.services.mozilla.com/D32841

--HG--
extra : moz-landing-system : lando

Differential Revision: https://phabricator.services.mozilla.com/D32364

--HG--
extra : moz-landing-system : lando

Differential Revision: https://phabricator.services.mozilla.com//D32843

Backed out changeset 4656c6e4964a (bug 1554733) for linting failure in periodic_file_updates.sh CLOSED TREE

Depends on D33345

Differential Revision: https://phabricator.services.mozilla.com/D33352

--HG--
extra : moz-landing-system : lando

# ignore-this-changeset

Differential Revision: https://phabricator.services.mozilla.com/D33345

--HG--
extra : moz-landing-system : lando

The error message previously pointed to README.md, but when you run
wptserve from inside Mozilla's central repository, it is not clear
exactly which README.md it is referring to.  Instead, let's use a URL.

Differential Revision: https://phabricator.services.mozilla.com/D33460

--HG--
extra : moz-landing-system : lando

Differential Revision: https://phabricator.services.mozilla.com/D32843

--HG--
extra : moz-landing-system : lando

Differential Revision: https://phabricator.services.mozilla.com/D33467

--HG--
extra : moz-landing-system : lando

Differential Revision: https://phabricator.services.mozilla.com/D32794

--HG--
extra : moz-landing-system : lando

Bug 1554847 - Improve cross-origin checks in canvas API - propagate allRedirectsSameOrigin to HttpChannelChild actor, r=mayhemer

Differential Revision: https://phabricator.services.mozilla.com/D32793

--HG--
extra : moz-landing-system : lando

Differential Revision: https://phabricator.services.mozilla.com/D32792

--HG--
extra : moz-landing-system : lando

Bug 1554847 - Improve cross-origin checks in canvas API - imgIRequest.hadCrossOriginRedirects, r=aosmond

Differential Revision: https://phabricator.services.mozilla.com/D32791

--HG--
extra : moz-landing-system : lando

Bug 1553236 - Change tests using Services.search.addEngineWithDetails() to use the object parameter form. r=Standard8

Differential Revision: https://phabricator.services.mozilla.com/D32565

--HG--
extra : moz-landing-system : lando