title: android:layout_centerHorizontal="true" not centering in landscape
body: <p>Here's my XML:  </p>
  
  <pre><code> &lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;RelativeLayout 
      xmlns:android="http://schemas.android.com/apk/res/android"
      android:layout_width="fill_parent"
      android:layout_height="wrap_content"&gt;
  
  
      &lt;WebView 
          android:id="@+id/WebView01"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_centerHorizontal="true"&gt;
      &lt;/WebView&gt;
  &lt;/RelativeLayout&gt;
  </code></pre>
  
  <p>The <code>WebView</code> is centered in portrait, but when I switch to landscape it seems aligned to the left of the <code>RelativeLayout</code>. Can't seem to figure this out.  </p>