Bug 1499045 part 1 - Simplify ArrayBufferViewObject::bufferEither a bit and remove ArrayBufferViewObject::bufferObject. r=jwalden Differential Revision: https://phabricator.services.mozilla.com/D8726

Bug 1459621 - Support (or document) mach try syntax for gecko profiling r=jmaher jmaher Differential Revision: https://phabricator.services.mozilla.com/D9386

Bug 1468761 - Migrate external Telemetry tests to handle packed histograms r=chutten Depends on D9236 Differential Revision: https://phabricator.services.mozilla.com/D9237

Bug 1468761 - Migrate Telemetry tests to always assume packed histograms r=chutten Depends on D9235 Differential Revision: https://phabricator.services.mozilla.com/D9236

Bug 1468761 - Always serialize histograms in packed format r=chutten Differential Revision: https://phabricator.services.mozilla.com/D9235

Backed out 6 changesets (bug 1489301) for Linting opt failure at /builds/worker/checkouts/gecko/dom/bindings/parser/WebIDL.py Backed out changeset 1c0823540b44 (bug 1489301) Backed out changeset 529524df76a6 (bug 1489301) Backed out changeset f34bc8a40bec (bug 1489301) Backed out changeset 168cf9cea716 (bug 1489301) Backed out changeset 19ca10fa3772 (bug 1489301) Backed out changeset ff8fb091198e (bug 1489301)

Bug 1500011 - Use CheckedInt more in CalculateBufferSizeForImage, r=smaug Differential Revision: https://phabricator.services.mozilla.com/D9145

Bug 1489301 - Part 6: Remove references to 'System' from WebIDL.py, r=bzbarsky 'Exposed=System' is no longer used in any webidl files, so we can kill it. Differential Revision: https://phabricator.services.mozilla.com/D9401

Bug 1489301 - Part 5: Expose all System-only objects on Window, r=bzbarsky There is a limited number of these, and this allows me to completely remove mention of the 'System' global. In the future System-only exposure could be achieved using a [Func] enabler. Differential Revision: https://phabricator.services.mozilla.com/D9400

Bug 1489301 - Part 4: Remove unnecessary [Exposed=System] annotations, r=bzbarsky We don't need to expose on both Window and System anymore, as Window now implies System. I don't remove unnecessary [Exposed=Window] annotations, as WebIDL upstream has removed PrimaryGlobal. Differential Revision: https://phabricator.services.mozilla.com/D9399

Bug 1489301 - Part 3: Fix test expecting interfaces not exposed on System, r=bzbarsky The `Window` interface is now exposed on system globals, so the check is now invalid. Differential Revision: https://phabricator.services.mozilla.com/D9403

Bug 1489301 - Part 2: Fix broken [Func] condition assuming Window object, r=bzbarsky This condition unwraps the global to a window, and doesn't check before dereferencing. This is no longer valid now that the corresponding interfaces are exposed on BackstagePass. Differential Revision: https://phabricator.services.mozilla.com/D9402

Bug 1489301 - Part 1: Expose Window interfaces on System by default, r=bzbarsky This is done by adding BackstagePass the exposure set of Window. Differential Revision: https://phabricator.services.mozilla.com/D9398

Bug 1500956 part 3. Fix our DOM pre-insertion checks to actually match the spec. r=smaug

Bug 1500956 part 2. Change our EnsurePreInsertionValidity implementation to follow the spec more closely. r=smaug This is basically putting in https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity step 3 and moving step 4 to the right place in the order of steps. This matters, because step 3 throws a different exception from all the other steps.

Bug 1500956 part 1. Change IsAllowedAsChild to take an ErrorResult instead of returning a boolean. r=smaug The spec algorithms have a step that throws NotFoundError in between steps that throw HierarchyRequestError. We can't really implement that with our current setup. This changeset does not change observable behavior.

Backed out 5 changesets (bug 1419091) for reftest failure at tests/layout/reftests/bugs/1377447-1.html. Backed out changeset 15811bce212a (bug 1419091) Backed out changeset 2224ee809328 (bug 1419091) Backed out changeset ac56492b6ed6 (bug 1419091) Backed out changeset 72ccc9444916 (bug 1419091) Backed out changeset 58d5a882493d (bug 1419091)

Bug 1501048 - remove bogus code; r=bstack This was likely the result of a merge error. The code is not needed, and anyway appears before a docstring.

Backed out 2 changesets (bug 1498371, bug 1498047) pushed on the wrong tree. Backed out changeset 1eaa48d8b75d (bug 1498371) Backed out changeset 9e28ac6527a9 (bug 1498047)

Bug 1498371 - Implement visitCompareBitwise. Fixes basic/testScriptCloning.js. a=nbp