Changes in 20200330094747

Built from ef8f91e97c99d3013dbe78e24f8cb52765ca6262

..index..
Bug 1618091 R[Core:DOM: Events]`beforeinput` event should be fired when `execCommand` is called by addons
Bug 1625792 R[Core:DOM: Navigation]Remove nsIURIContentListener.onStartURIOpen.
Bug 1621756 A[Core:DOM: Push Notifications]Reset the UAID if there are no push subscriptions in the database
Bug 1615297 R[Core:DOM: Security]Refactor GetURI usage for StorageUtils.cpp
Bug 1598299 R[Core:Disability Access APIs]atk_component_ref_accessible_at_point() sometimes fails to return the accessible at point
Bug 1624257 R[Core:Gecko Profiler]Implement ProfileBufferChunkManager and ProfileBufferChunkManagerSingle
Bug 1625797 A[Core:ImageLib]replace nsIProperties impl on RasterImage with hotspot accessors
Bug 1622651 R[Core:JavaScript Engine]Convert EvalJSONResult from enum to enum class
Bug 1551306 R[Core:Networking]Remove context parameter from nsIProgressEventSink.onProgress() and nsIProgressEventSink.onStatus()
Bug 1179250 R[Core:Networking]JavaScript error: resource://devtools/server/actors/network-monitor/network-response-listener.js, line 84: NS_ERROR_FAILURE: Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [nsIInterfaceRequestor.getInterface]
Bug 1622600 R[Core:Networking]Replace URIParams with nsIURI in PBrowser.ipdl
Bug 1587353 R[Core:Networking: HTTP]Add tests for http3
Bug 1545727 R[DevTools:JSON Viewer]The viewer for JSON responses is completely inaccessible
Bug 1625216 R[Firefox Build System:Generated Documentation]Migration the bugzilla doc in-tree
Bug 1625303 R[Firefox Build System:Task Configuration]Fuzzing builds no longer have gtests packaged
Bug 1618754 R[GeckoView:General]Support inputmode=none to hide VKB
Bug 1625710 R[Toolkit:Themes]Use :host([orient="horizontal"]) to style arrowscrollbox buttons instead of inheriting the orient attribute
Bug 1625637 R[Toolkit:XUL Widgets]Remove icon attributes from XUL buttons
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Changes to 18 bugs - 16 fixed.