Fixed bugs in 20190401094905

Bug 1312823 R[DevTools:Console]Run mocha tests with TaskCluster
Bug 1492340 N[Core:DOM: Service Workers]Intermittent TEST-UNEXPECTED-TIMEOUT | dom/tests/mochitest/fetch/test_fetch_cors_sw_reroute.html | application timed out after 370 seconds with no output
Bug 1506324 R[Core:JavaScript Engine]Add JS::DefaultGlobalClassOps to JSAPI
Bug 1518138 R[Core:JavaScript Engine]Intermittent GECKO(5620) | Assertion failure: [unhandlable oom] Failed not allocate new chunk during GC, at z:/build/build/src/js/src/vm/JSContext.cpp:1485
Bug 1519636 N[Firefox Build System:Lint and Formatting]Reformat recent changes to the Google coding style
Bug 1529492 R[Core:Layout]Problem with edit cursor in scaled content editable
Bug 1531988 N[Core:Audio/Video: Playback]Intermittent dom/media/test/test_cloneElementVisually_mediastream.html | Should match MediaStream
Bug 1538584 V[Firefox:Theme][RTL] Search sign overlaps the clear text icon in the "Search synced tabs" field on the sidebar
Bug 1539036 R[Core:JavaScript Engine]Compiler warnings in JSAPI header files make life difficult for embedders
Bug 1539131 V[DevTools:Console]Permafailing xpcshell devtools/server/tests/unit/test_objectgrips-08.js | xpcshell return code: 0 when Gecko 68 merges to Beta on 2019-05-06
Bug 1539506 R[DevTools:Debugger]Ensure reducer breakpoints and installed breakpoints are in sync
Bug 1540089 R[Core:Internationalization]Update compare-locales, fluent.syntax and fluent.migration to Fluent Syntax 0.9
Bug 1540149 R[DevTools:Console]Deprecation warning in webconsole.js
Bug 1540514 R[Core:DOM: Core & HTML]Use NS_NewURIOnAnyThread in URL API
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Changes to 14 bugs - 9 fixed.