Bug 1372981 - Limit reftest to 4 attempts at recovering after a crash, r=jmaher MozReview-Commit-ID: IEfM1b6FTHD

Bug 1373625 - Silence a -Wunused-lambda-capture warning in nsContainerFrame.cpp r=dholbert MozReview-Commit-ID: 6PaCykerJHw

Backed out 3 changesets (bug 1368072) for colliding with a new use of the thing it was renaming Backed out changeset 1d7e008d7d70 (bug 1368072) Backed out changeset c4a1ddf9be0d (bug 1368072) Backed out changeset ba1cdae5a8d6 (bug 1368072)

Backed out 4 changesets (bug 1343728) for failures in test_group_mouseevents.html a=backout Backed out changeset 2029cb6bce86 (bug 1343728) Backed out changeset 0169e09f6030 (bug 1343728) Backed out changeset 831e95b29f66 (bug 1343728) Backed out changeset d5630ef01b17 (bug 1343728) MozReview-Commit-ID: 2RRBTmp5FGj

Backed out changeset 36d662fbab77 (bug 1350633) for failures in test_group_mouseevents.html a=backout MozReview-Commit-ID: Gh9eflBppgq

Backed out changeset 44532a19e524 (bug 1374665) for test_group_mouseevents.html failures a=backout MozReview-Commit-ID: BNCBrA8XhRV

Merge inbound to m-c a=merge MozReview-Commit-ID: 3LXFVwSoMvs

Bug 1373988 - Make webrtc-gtest build work with system jpeg and libvpx; r=glandium MozReview-Commit-ID: 1x8v7G2fvlK

Bug 1374665 - Stop parsing principals during GetPermissionsForKey, r=ehsan MozReview-Commit-ID: 28BCIqA2Kf2

Bug 1350633 - Remove the Msg_GetWidgetNativeData sync IPC, r=billm, r=jimm MozReview-Commit-ID: Bql29wgVDZ5

Bug 1343728 - Part 4: Remove the window creation sync IPC calls, r=billm, r=smaug MozReview-Commit-ID: IWayDUWuRrf

Bug 1343728 - Part 3: Add StableStateEventTarget, an event target which runs dispatched runnables at the next stable state, r=smaug MozReview-Commit-ID: 8dlo5Z60qsG

Bug 1343728 - Part 2: Add const operator== to TextureFactoryIdentifier and CompositorOptions, r=jrmuizel MozReview-Commit-ID: 6BayMmqNlyx

Bug 1343728 - Part 1: Add the ability to temporarially delay remote docshells from becoming active, r=smaug MozReview-Commit-ID: KAaeu5ETc0x

Bug 1363650 - (intersection-observer) Use content area as the intersection rectangle for custom root with overflow clip. r=mattwoodrow

Bug 1363655 - part 8 - check for the existence of a libclang bindgen will use; r=rillian Ideally this check will alert people that something is wrong with their configuration. This check shouldn't normally be firing with our `mach boostrap` setup, but if somebody chooses to install distribution packages for some reason, this will at least prevent some problems.

Bug 1363655 - part 7 - make stylo bindgen bits depend on a compile environment; r=rillian People building without a compilation environment (artifact builds, l10n builds) won't have a compiler available, let alone the bits to build bindgen. We should limit our checks for bindgen-y things accordingly.

Bug 1363655 - part 6 - remove the `stylo` configure function; r=rillian After the previous set of patches, it's just a bloated wrapper for bindgen_config_paths.

Bug 1363655 - part 5 - make things properly depend on stylo bindgen building; r=rillian Prior to this patch, we had a not-so-great hack in place: the bit of configure that determined bindgen config paths *and* the bit of configure that returned various pieces of information about Stylo were both guarded on --enable-stylo-build-bindgen. We should really only have one place that depends on --enable-stylo-build-bindgen, and this patch puts us in a place to do that, by making bindgen_config_paths properly use a when= argument to determine when it needs to run. This commit makes the `stylo` function entirely redundant, and said function will be removed in the next patch.

Bug 1363655 - part 4 - remove bindgen_enabled key from namespace returned from stylo; r=rillian We can get this information directly from --enable-stylo-build-bindgen.