Changes in 20210328095625

Built from 7798a3347ef9b969e74e86d1f57b322f18d6db0a

..index..
Bug 1700799 A[Core:Canvas: WebGL]WebGL context creation fails under llvmpipe
Bug 1701138 R[Core:DOM: Editor]layout/reftests/bugs/572598-ref.html should set `readonly` attribute to the `<input>` element
Bug 1672141 N[Core:DOM: UI Events & Focus Handling]Intermittent dom/events/test/pointerevents/test_wpt_touch_action.html | Test timed out.
Bug 1630356 R[Core:Graphics: WebRender]WebRender shows triangles by default, corrupt text when pinching on Moto G (XT1031) [Adreno 305]
Bug 1696859 R[Core:JavaScript Engine]Remove ObjectGroup.h/cpp
Bug 1660006 R[Core:JavaScript: GC]Check GC works with 16KB page sizes on Apple arm64 hardware
Bug 1700819 R[Core:Panning and Zooming]Touchpad pinch gestures on Bing Maps on Linux cause a small amount of undesirable browser zooming
Bug 1697836 R[Core:Printing: Setup]Firefox 86: Printing via script can lock up browser tab (invisible print dialog?)
Bug 1701346 A[Core:Storage: Quota Manager]Revert QM_OR_ELSE_WARN to ordinary orElse in places where NS_ERROR_FILE_ALREADY_EXISTS/NS_ERROR_FILE_NOT_FOUND/NS_ERROR_FILE_TARGET_DOES_NOT_EXIST needs to be just ignored
Bug 1523500 R[Core:Web Painting]Don't use cross-doc checks for perspective scrolling.
Bug 1701390 R[Core:Web Painting]Crash in [@ nsDisplayWrapList::nsDisplayWrapList]
Bug 1666529 R[DevTools:Storage Inspector]Add cookie storage resource
Bug 1699250 A[Firefox:General]Use proton accent colour for buttons/inputs in dark theme
Bug 1700837 R[Firefox:Installer]Remove or update probes expiring in Firefox 90: migration.uninstaller_profile_refresh
Bug 1701347 R[Firefox:Theme]Menulist chrome tests are unhappy with proton enabled
Bug 1700236 R[Toolkit:Application Update]Add xpcshell tests exercising `BackgroundUpdate.jsm` precondition checking
Bug 1689519 R[Toolkit:Application Update]Add `--backgroundtask backgroundupdate` implementation
Bug 1687777 R[Toolkit:Application Update]Schedule background update backgroundtask
Bug 1690333 A[Toolkit:Themes]Align notification bar styles with proton
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Changes to 19 bugs - 14 fixed.