Bug 1685950 R[Core:CSS Parsing and Computation]Update cssparser to pick some perf improvements.
Bug 1685917 R[Core:CSS Parsing and Computation]Cleanup a bit the pseudo-elements code.
Bug 1684909 N[Core:CSS Parsing and Computation]Implement most of the remaining bits of image-set().
Bug 1685828 R[Core:DOM: Core & HTML]Stop calling SVG and MathML enabling helpers every time we check their enabling status
Bug 1685816 R[Core:DOM: Core & HTML]network.preload causes error looping with media="print"
Bug 1651863 R[Core:Gecko Profiler]Assertion failure in ReleaseChunks: `chunk->ChunkHeader().mDoneTimeStamp < chunk->GetNext()->ChunkHeader().mDoneTimeStamp`, "Released chunk groups must have increasing timestamps"
Bug 1681610 R[Core:Graphics]Bullet points have a hole at the centre
Bug 1679215 R[Core:Graphics: WebRender]sw-wr: Wayland: Sections of the main menu disappear
Bug 1684781 N[Core:Graphics: WebRender]Improve performance of mix-blend and backdrop-filter
Bug 1685437 R[Core:Graphics: WebRender]Add code for multiple upload paths within RenderCompositorD3D11SWGL
Bug 1685643 R[Core:Graphics: WebRender]The texture cache's size estimation drifts and causes overaggressive eviction
Bug 1682315 R[Core:JavaScript Engine]Consider splitting SourceExtent from ScriptStencil
Bug 1685830 R[Core:Networking]Preload can't be used from a file:// URI.
Bug 1685832 R[Core:Networking]Remove some header includes from PreloaderService.h
Bug 1685009 R[Core:Panning and Zooming]Assertion failure: IsRootContent() || relativeOffset == CSSPoint(), at src/gfx/layers/FrameMetrics.cpp:132
Bug 1685196 R[Core:Widget]layout/base/crashtests/336999-1.xhtml fails with non-native theme
Bug 1685667 R[DevTools:Framework]Move devtools/shared/screenshot/ capture and save file to resp. devtools/server and devtools/client
Bug 1649164 R[Firefox:Enterprise Policies]Policy defined search engines default to a query charset of windows-1252
Bug 1649165 R[Firefox:Search]Sort out the defaults for queryCharset in the SearchService
Bug 1683952 R[Firefox:Search]Remove unused isReload in the SearchService
Bug 1685124 R[Firefox:Search]Intermittent browser/modules/test/browser/browser_ProcessHangNotifications.js | A promise chain failed to handle a rejection: can't access property "isAppProvided", engine is null - stack: _updateURLBarPlaceholder@chrome://browser/content/browser.js:4138:
Bug 1677179 R[Firefox:Security]certificate error pages can't use js modules when instantiated in a sandboxed iframe
Bug 1579108 R[Firefox:about:logins][Linux] The "Copy" buttons of the username and password fields are not aligned
Bug 1685957 R[Firefox Build System:Source Code Analysis]Use xargs to test non-unified builds.
Bug 1685650 R[Firefox Build System:Toolchains]Upgrade toolchains using clang 9 to clang 11
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Changes to 25 bugs - 23 fixed.