title: Default width and height of a View with wrap_content
body: <p>When I create a custom <code>View</code>, and I draw it by adapting sizes in <code>View.onSizeChanged()</code>, what is the default size of the <code>View</code>? I my layout I have set the <code>android:layout_width</code> and <code>android:layout_height</code> to <code>wrap_content</code>.</p>