Bug 1634200 don't create a new global when the Worklet is finished r=padenot When the worklet has already received the notification to shut down, there will be no further notfication to release another global. Differential Revision: https://phabricator.services.mozilla.com/D85975

Bug 1651088 - ensure ExoPlayer instance operate on a single thread. r=geckoview-reviewers,snorp The threading model described in the javadoc (ExoPlayer.java#92 in tree) requires that the player is accessed from a single thread. However current GeckoHlsPlayer implementation violates this rule and uses the player from Gecko main thread and other media task queues. Introduce methods to execute code asynchronously and synchronously for GeckoHlsPlayer to follows the rule. Also add comments documenting thread usages for some instance variables and assertions in the begining of methods that need to be on the player thread to help debugging. Differential Revision: https://phabricator.services.mozilla.com/D85668

Bug 1656298 - Line up the rows and columns in the print UI. r=mstriemer Differential Revision: https://phabricator.services.mozilla.com/D85950

Bug 1656379 - Rename nsCUPSShim function pointers r=AlaskanEmily,jwatt Differential Revision: https://phabricator.services.mozilla.com/D85491

Bug 1654248 - Fix missing telemetry reporting of WEBRTC_CALL_DURATION, and stop counting renegotiations in WEBRTC_CALL_COUNT_2. r=bwc Differential Revision: https://phabricator.services.mozilla.com/D85042

Backed out changeset c8123a3e4249 (bug 1656638) for build bustages at Runtime.h. CLOSED TREE

Bug 1656638: Add Wasm compile- and run-time telemetry to track Wasm compiler performance. r=lth This patch adds telemetry to measure the time spent in Wasm compilers and in the code that they generate (actually, all JS and Wasm code). For simplicity, it measures wallclock time as a proxy for CPU time. Furthermore, it measures runtime for all JS and Wasm code, and all native functions invoked by the JS or Wasm code, by timing from top-level entry to exit. This is for efficiency reasons: we do not want to add a VM call in the transition stubs between native and JS or JS and Wasm; that would be a Very Bad Thing for performance, even for a Nightly build instrumented with telemetry. Because of that, it's difficult to separate JITted JS and JITted Wasm runtime, but observing their sum should still be useful when making comparisons across compiler changes because absolute reductions will still be visible. The plumbing is somewhat awkward, given that Wasm compilers can run on background threads. It appears that the telemetry-callback API that SpiderMonkey includes to avoid a direct dependency on the Gecko embedding had artificially limited the callback to main-thread use only. This patch removes that limitation, which is safe at least for Gecko; the telemetry hooks in Gecko are thread-safe (they take a global mutex). That way, the background threads performing compilation can directly add telemetry incrementally, without having to pass this up through the main thread somehow. Finally, I have chosen to add the relevant metrics as Scalar telemetry values rather than Histograms. This is because what we are really interested in is the sum of all these values (all CPU time spent in compilation + running Wasm code); if this value goes down as a result of a Wasm compiler change, then that Wasm compiler change is good because it reduces CPU time on the user's machine. It is difficult to add two Histograms together because the bins may have different boundaries. If we instead need to use a binned histogram for other reasons, then we could simply report the sum (of all compiler time plus run time) as another histogram. Differential Revision: https://phabricator.services.mozilla.com/D85654

Bug 1657164 - Remove PSPrinters r=jwatt,emilio Differential Revision: https://phabricator.services.mozilla.com/D85939

Bug 1657420 - Use single quotes instead of double quotes for the version_win.py command. r=dmajor On Windows, with the double quotes, the command goes through the msys shell, which then alters the command line such that empty arguments are transformed into \ when they reach python. With the single quotes, make invokes the command directly, without going through the msys shell, and empty arguments are preserved. Differential Revision: https://phabricator.services.mozilla.com/D86097

Bug 1654933. Make ScrollFrameHelper::GetScrollRangeForUserInputEvents return a range that encompasses the visual viewport offset even if we are overflow: hidden. r=kats Depends on D85983 Differential Revision: https://phabricator.services.mozilla.com/D85984

Bug 1654933. ScrollFrameHelper::CurPosAttributeChanged should be using the scroll range not the scroll rect. r=kats UpdateScrollbarPosition and ReflowFinished both use the scroll range for this. It usually doesn't matter, but the next patch will make it important. Differential Revision: https://phabricator.services.mozilla.com/D85983

Bug 1654678 Part 4 - Make GTK printer enumeration use the unified CUPS code r=jwatt,emilio Differential Revision: https://phabricator.services.mozilla.com/D85502

Bug 1656631 - Multistage about:welcome - Make static sites in import screen as default experience r=emcminn Differential Revision: https://phabricator.services.mozilla.com/D86040

Backed out 2 changesets (bug 1654064) for failing android at test_third_party_iframes.html on a CLOSED TREE Backed out changeset 23e5e026f179 (bug 1654064) Backed out changeset 90bf9f23c414 (bug 1654064)

Merge mozilla-central to autoland on a CLOSED TREE

Bug 1655544 use associated AudioWorkletNode for AudioParamMap parent object r=padenot so that the AudioParamMap has the same associated global as its node. Differential Revision: https://phabricator.services.mozilla.com/D85963

Backed out changeset 33cf94c2936b (bug 1653796) for failures at test_frame_reconstruction.html. CLOSED TREE

Backed out changeset 6faa35a6346f (bug 1655485) browser_searchModeIndicator.js. CLOSED TREE

Bug 1654064 - P2. Add a testcase for applying window.open heuristic on a first-party iframe. r=baku Differential Revision: https://phabricator.services.mozilla.com/D85827

Bug 1654064 - P1. Use first-party check instead of top-level check while applying storage access heuristic r=baku Differential Revision: https://phabricator.services.mozilla.com/D85826