webrtc/modules/audio_device/test/android/audio_device_android_test/res/layout/main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
	      android:orientation="vertical"
	      android:layout_width="fill_parent"
	      android:layout_height="fill_parent">

  <Button android:text="@string/run_button"
	  android:id="@+id/Button01"
	  android:layout_width="wrap_content"
	  android:layout_height="wrap_content">
  </Button>
</LinearLayout>