Merge mozilla-central to inbound r=merge

Bug 1424915 - Close a httpTransaction from a http2session with the right error code if the error code is NS_BINDING_RETARGETED. Otherwise the transaction will be restarted twice. r=mcmanus

Bug 1303957 Part2: Setup necessary attributes to calculate offsetX/offsetY and add a test with synthesized widget events. r=smaug. MozReview-Commit-ID: Kc4f2MXueUP

Bug 1303957 Part1: Add support for PointerEvent.getCoalescedEvents. r=smaug. We implement PointerEvent.getCoalescedEvents as 1. Clone the widget events we coalesced. 2. Convert them to dom::PointerEvent when user calls getCoalescedEvents. MozReview-Commit-ID: 8IKw4PbUsDD

No bug, Automated HPKP preload list update from host bld-linux64-spot-306 - a=hpkp-update

No bug, Automated HSTS preload list update from host bld-linux64-spot-306 - a=hsts-update

No bug, Automated HPKP preload list update from host bld-linux64-spot-302 - a=hpkp-update

No bug, Automated HSTS preload list update from host bld-linux64-spot-302 - a=hsts-update

servo: Merge #19569 - Add a topLevelDomComplete metric (from asajeffrey:script-perf-measure-topLevelDomComplete); r=jdm <!-- Please describe your changes on the following line: --> Measure DOM completion without iframes. This is in support of measuring when the main document is loaded, ignoring secondary content, e.g. ads. --- <!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `__` with appropriate data: --> - [X] `./mach build -d` does not report any errors - [X] `./mach test-tidy` does not report any errors - [X] These changes fix #19561 - [X] There are tests for these changes <!-- Also, please make sure that "Allow edits from maintainers" checkbox is checked, so that we can help you if you get stuck somewhere along the way.--> <!-- Pull requests that do not address these steps are welcome, but they will require additional verification as part of the review process. --> Source-Repo: https://github.com/servo/servo Source-Revision: d832e1b8f843612b4cb124d8c4eb9dce94e92d50

Bug 1425370 - Fix DPI scaling for mozscreenshots. r=MattN MozReview-Commit-ID: LjmcLImLx0d

Backed out 7 changesets (bug 1377007) for web platform reftests failures on CSS2/borders. r=backout Backed out changeset c30bc5d5adbc (bug 1377007) Backed out changeset 33fdf9e531e2 (bug 1377007) Backed out changeset 267abdb38036 (bug 1377007) Backed out changeset 4a452c3ac115 (bug 1377007) Backed out changeset e9310960c9e6 (bug 1377007) Backed out changeset 8e5e61dfbbaf (bug 1377007) Backed out changeset 9ac83e79e656 (bug 1377007)

Backed out changeset effe32c10525 (bug 1394121) for ESlint failure on test_temporary.js r=backout on a CLOSED TREE

Bug 1394121 Let legacy extensions be installed temporarily r=kmag MozReview-Commit-ID: 4fiA8vvCjmr

Bug 1413104 - Drop telemetry probes for layer size; r=botond MozReview-Commit-ID: FtpTJDC50A8

Bug 1421701 - Chunk visits when notifying main thread r=mak Since processing several hundred visits synchronously on the main thread can be somewhat expensive, and since the main thread might be idle while the storage worker is running, it makes sense to chunk the messages into groups of 100. We did have a concern that this changes the move of the underlying array to a copy, which might bring some cost with it. For small arrays, we simply move the underlying array to avoid the copy to mitigate it. However, for large arrays I was unable to observe any significant performance cost anyway, so I think we're in the clear. MozReview-Commit-ID: 1hWSEyKw6pi

Bug 1423247 - Couple Awesome Bar Composition (matchBuckets pref) to user's Address bar state (unified vs. 2 bar). r=mak MozReview-Commit-ID: LZIWVcDvMrK

servo: Merge #17580 - Add rudimentary .taskcluster.yml (from edunham:taskcluster); r=aneeshusa Template mostly from https://tools.taskcluster.net/quickstart/. Steps from the linux-dev builder in etc/ci/buildbot_steps.yml, but with the real parts commented out for speed during the testing process. r? @aneeshusa I got the first-draft image built and pushed to docker hub at https://hub.docker.com/r/servobrowser/servo-linux-dev which is what this is set to pull from. cc @gregarndt @imbstack Source-Repo: https://github.com/servo/servo Source-Revision: 7897bd15d7df2f27b70d5ef7597458ecf296fdba

Bug 1416991 - Fix perspective indexing in partial DL builds - r=mattwoodrow Perspective item indices (used to produce unique per-frame keys) were generated by incrementing a counter in the builder when building a perspective display item. This caused problems with retained display lists, because an unmodified perspective could be skipped during a partial build, causing other perspectives to be incorrectly numbered and then incorrectly merged with the previous retained display list. To fix this, we need to always increment the counter if there is likely to be a perspective, before that item may be skipped. MozReview-Commit-ID: Edn7lUOLuPw

Backed out changeset db713228c8e3 (bug 1425150) for wpt failures on core/platform.cpp r=abackout on a CLOSED TREE

Backed out changeset 6cb9414b5d77 (bug 1425115) for web platform reftests failures on CSS2/borders. r=backout on a CLOSED TREE