I haven't tried these instructions, but the Android WebRender bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1453367#c13 https://bugzilla.mozilla.org/show_b

I haven't tried these instructions, but the Android WebRender bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1453367#c13 https://bugzilla.mozilla.org/show_bug.cgi?id=1453367#c13 says to download the "geckoview_example" app's APK: https://queue.taskcluster.net/v1/task/AY-d7ns9QOGZuFj3syrsDQ/runs/0/artifacts/public/build/geckoview_example.apk https://queue.taskcluster.net/v1/task/AY-d7ns9QOGZuFj3syrsDQ... and then remotely launch the geckoview_example app from a connected desktop machine: adb shell am start -n org.mozilla.geckoview_example/.GeckoViewActivity --es env0 MOZ_WEBRENDER=1