chore: add 2020-04-20 API WG meeting notes (#274)

wg-api/meeting-notes/2020-04-20.md

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+# API Working Group
+
+## Date 4/20/19
+
+### Attendees
+
+- @zcbenz
+- @nornagon
+- @jkleinsc
+- @codebytere
+- @MarshallOfSound
+
+### Visitors
+
+- @robo
+
+### Followup
+
+- @MarshallOfSound to clarify on what experimental means in the docs
+    - PR was merged - https://github.com/electron/electron/pull/22893
+- @codebytere to research Chromium's Intent to Implement / Intent to Experiment protocols
+    - Now called "intent to prototype"
+    - not a lot of hard requirements
+    - "intent to experiment" is the implementation phase. comes before an origin trial.
+    - after that "intent to ship".
+    - electron doesn't have origin trials
+    - chromium does about:flags -> origin trial -> off -> on for whole web
+    - devs can ship things w/ a --flag enabled
+        - could read flags before JS starts? makes it more annoying for devs
+    - maybe the Experimental note in the docs is sufficient?
+    - maybe a case for "nightly-only" features?
+        - when would this graduate into a full feature?
+        - same as for regular commits
+    - maybe something like enableFeatures?
+        - reusing chromium's content features api
+        - could be enough friction to make devs stop & think
+    - Next step: spec doc. [@codebytere & @jkleinsc]
+- @zcbenz to make some revisions to the Views spec PR
+    - not the layout engine PR, this is the TopLevelWindow one
+    - this got merged :+1: 
+- @loc and @MarshallOfSound to review "get tab media stream" PR
+    - commented to ask for a change, no response
+    - #22701
+
+### Agenda
+
+1. [docs: views API: child views and layout engine](https://github.com/electron/governance/pull/271)
+    * Should we build in YogaLayout or expose the underlying primitives?
+        * Using YogaLayout would reduce API surface
+        * Would need to update rollerbot to keep it up to date
+        * Would using YogaLayout allow Electron to include React Native Views? - not without a lot of work
+            * RN has its own JS engine as well as its own copy of YogaLayout
+        * Let's spec out a "plan B" which exposes the lower-level building blocks?
+        * [@zcbenz to update spec]
+
+3. [API review requested PRs](https://github.com/electron/electron/pulls?q=is%3Aopen+is%3Apr+label%3Aapi-review-requested)
+    * [feat: add desktopCapturer.getWebContentsStream() to get media stream id from web contents](https://github.com/electron/electron/pull/22701)
+        * Waiting for author response
+
+## Action Items
+
+*  @codebytere & @jkleinsc spec doc on nightly-only features