Bug 1484672 - Use node.click instead of synthesizeMouseAtCenter in browser_webconsole_object_inspector_scroll.js; r=davidwalsh Differential Revision: https://phabricator.services.mozilla.com/D3774

Bug 1478112 - Get rid of preselect tabbox workaround, and adjust focus after changing visible tab right away. r=dao The "select" event handler workaround was originally added in bug 1379270 to make it possible to focus and select the URL bar a little bit later. This ugly hack was to workaround an issue with WebExtensions that override about:newtab with the chrome_url_overrides property (the issue would be that the URL bar would not be properly focused and selected if about:newtab was overridden). Back in the day, this was necessary because the overriding URL was fully displayed in the URL bar (moz-webextension://...). These days, when about:newtab is overridden, the URL bar is still empty - we just end up showing the information about the WebExtension overriding about:newtab to the left of the URL bar. So I think we can remove the old workaround. Differential Revision: https://phabricator.services.mozilla.com/D3447

bug 1483311 - add LOAD_DISABLE_TRR as a loadflag r=mcmanus Disable TRR at will without needing to toggle the pref. MozReview-Commit-ID: 1Ept6kDrjN3 Differential Revision: https://phabricator.services.mozilla.com/D3399

Bug 1482498 - Remove mozMatchesSelector(…) usage from browser‑places.js r=miketaylr Differential Revision: https://phabricator.services.mozilla.com/D3766

Bug 1417050: Add support for AV1 in MP4. r=jya Differential Revision: https://phabricator.services.mozilla.com/D3365

Merge mozilla-inbound to mozilla-central. a=merge

Bug 1481951 part 2: Adjust reftest contain-layout-overflow-002.html to be clearer & have accurate expectations. r=dbaron This test is basically a copy of its -001 variant, with some "float:left" sprinkled around on contained descendants. Before this patch, this test had an additional arbitrary sizing difference as compared to the -001 version -- there's one element that arbitrarily has class "outer" in the -002 test whereas it has class "inner-lg" in the -001 version. These classes have different sizing characteristics, which makes a difference to whether scrollbars show up, because this element is not contained (though it is a layout container itself). This patch undoes this arbitrary difference and also adds a "float" class to make it easier to see which elements we've sprinkled float styling onto. Differential Revision: https://phabricator.services.mozilla.com/D3826

Bug 1481951 part 1: Adjust contain-layout-overflow-* reftests to remove unused rule for nonexistent class "inner-md". r=dbaron Differential Revision: https://phabricator.services.mozilla.com/D3825

Bug 1471371 - OOM handling in RegExp construction. r=jorendorff

Bug 1483911 - Defer scrolling events until after ipc doc construction. r=Jamie

Bug 1484421 - Move JSON-related functionality into js/public/JSON.h that isn't #include'd in jsapi.h. r=jandem

Bug 1033916 - Move JSAutoByteString out of jsapi.h into js/public/AutoByteString.h, incidentally breaking the jsfriendapi.h -> jsapi.h dependency. r=jandem

Bug 1484389 - Move various SavedFrame-related functions and data types into js/public/SavedFrameAPI.h so that users aren't forced to depend on jsapi.h or jsfriendapi.h for them. r=jandem

Bug 1484386 - Move various memory-allocation-related functions into js/public/MemoryFunctions.h to (ultimately) minimize dependencies required to use these functions in forthcoming public headers. r=jandem

Bug 1484385 - Move various error-report-related structures and types into js/public/ErrorReport.h to minimize dependencies (and ultimately to make jsfriendapi.h not depend on jsapi.h). r=jandem

Bug 1040316 - Move AutoStableStringChars out of friendapi into public API. r=jandem

Bug 1483374 - Intl.NumberFormat shouldn't deliberately conflate -0 with +0. r=anba

Bug 1484605 - Tweak some lookupForAdd() uses. r=luke These are cases where the existing code is a little dubious or sub-optimal.

Backed out 8 changesets (bug 1330257) for Geckoview failures at GeckoSessionTestRuleTest.waitForPageStop_throwOnChangedCallback on a CLOSED TREE Backed out changeset c26970c767e1 (bug 1330257) Backed out changeset 53ef69afca69 (bug 1330257) Backed out changeset 62e53fa35d5b (bug 1330257) Backed out changeset 7c589fc8621b (bug 1330257) Backed out changeset 593f9a799d11 (bug 1330257) Backed out changeset 9085b9fd557c (bug 1330257) Backed out changeset aa0ef9b0e96a (bug 1330257) Backed out changeset 7186e64192f7 (bug 1330257)

Bug 1330257 - 5a. Fix checkstyle error; r=jchen