Changes in 20200301094802

Built from 26c0d04361dc292b940128276b41fb81c734ba1d

..index..
Bug 1617644 R[Core:CSS Parsing and Computation]Convert color-interpolation #defines to an enum class.
Bug 1617500 N[Core:DOM: Navigation]Construct LoadInfo in the parent process when using DocumentChannel
Bug 1617789 R[Core:DOM: Networking]Move mutation of LoadInfo for DocumentChannel into the parent process
Bug 1374612 R[Core:DOM: Security]CSP: Hide nonce values from the DOM
Bug 1618037 R[Core:DOM: Security]Intermittent TEST-UNEXPECTED-NOTRUN | /content-security-policy/navigate-to/spv-only-sent-to-initiator.sub.html | Test that no spv event is raised - expected FAIL
Bug 1617434 N[Core:DOM: Workers]Avoid recreating reserved Clients when we process switch
Bug 1613077 R[Core:Layout: Generated Content, Lists, and Counters]Intermittent /css/css-pseudo/marker-content-020.html | Testing http://web-platform.test:8000/css/css-pseudo/marker-content-020.html == http://web-platform.test:8000/css/css-pseudo/marker-content-020-ref.html
Bug 1619041 R[Core:Layout: Tables]Unnecessary check and increment in nsCellMap::HasMoreThanOneCell
Bug 1616780 R[Core:Security: Process Sandboxing]Crash in [@ syscall] on glib >=2.63
Bug 1617867 V[Core:Web Audio]Perma Beta TEST-UNEXPECTED-FAIL | /webaudio/idlharness.https.window.html | AudioNode interface: worklet_node must inherit property "connect(AudioNode, optional unsigned long, optional unsigned long)" when Gecko 75 merges to Beta on 2020-03-09
Bug 1609460 A[DevTools:Console]Intermittent devtools/client/webconsole/test/browser/browser_console_context_menu_entries.js | A promise chain failed to handle a rejection: [Exception... "(null)" nsresult: "0x80040111 (NS_ERROR_NOT_AVAILABLE)" location: "<unknown>" data: no] - stack:
Bug 1557181 N[DevTools:Inspector]Intermittent devtools/client/inspector/grids/test/browser_grids_grid-outline-updates-on-grid-change.js | A promise chain failed to handle a rejection: this.parentGridHighlighters is null - stack: onMarkupMutation@resource://
Bug 1613337 R[Firefox:Migration]Support login import from Chrome/Edge 80+ on Windows
Bug 1619012 R[Firefox Build System:Generated Documentation]Enhance "How to contribute to Firefox" documentation with extra beginner info
Bug 1608353 R[Toolkit:Add-ons Manager]Intermittent toolkit/mozapps/extensions/test/browser/browser_about_debugging_link.js | A promise chain failed to handle a rejection: this.conn is null - stack: writeError@resource://devtools/shared/protocol/Actor.js:98:5
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Changes to 15 bugs - 9 fixed.