AndroidManifest.xml

Enable keyboard shortcuts

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="org.mozilla.vrbrowser">

    <application>

        <activity android:name=".VRBrowserActivity"

            android:screenOrientation="landscape">

            <intent-filter>

                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

        </activity>

    </application>

</manifest>