Merge "Expose PickActivity to ephemeral apps"

        <activity

            android:name=".picker.PickActivity"

            android:theme="@style/DocumentsTheme"

            android:icon="@drawable/picker_icon">

            android:icon="@drawable/picker_icon"

            android:visibleToEphemeral="true">

            <intent-filter>

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

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