introduce Media object

Author: annevk

cssom/Overview.html

@@ -2611,8 +2611,8 @@ <h4 id=the-media><span class=secno>4.1.2. </span>The <code
 
   <p>The <dfn id=type title=media-type><code>type</code></dfn> attribute, on
    getting, <em class=ct>must</em> return the string that represents the
-   canvas' current rendering mode (<code><a href="#screen">screen</a></code>,
-   <code>print</code>, etc). This is a lowercase string, as defined by the
+   canvas' current rendering mode (<code title="">screen</code>, <code
+   title="">print</code>, etc). This is a lowercase string, as defined by the
    CSS specification. [CSS]
 
   <p>The <dfn id=matchmedia title=media-matchmedia><code>matchMedia(<var

cssom/Overview.src.html

@@ -2163,8 +2163,9 @@ <h4>The <code title="">Media</code> Interface</h4>
 
   <p>The <dfn title="media-type"><code>type</code></dfn> attribute, on getting,
   <em class="ct">must</em> return the string that represents the canvas' current
-  rendering mode (<code>screen</code>, <code>print</code>, etc). This is a
-  lowercase string, as defined by the CSS specification. [CSS]</p>
+  rendering mode (<code title="">screen</code>, <code title="">print</code>,
+  etc). This is a lowercase string, as defined by the CSS specification.
+  [CSS]</p>
 
   <p>The
   <dfn title="media-matchmedia"><code>matchMedia(<var title="">mediaquery</var>)</code></dfn>