[cssom-view] Tweak wording for colorDepth. https://www.w3.org/Bugs/Public/show_bug.cgi?id=14071

Author: Simon Pieters

cssom-view/Overview.html

@@ -405,7 +405,7 @@ <h3 id="the-screen-interface"><span class="secno">4.2 </span>The <code title="">
 <dt class="attribute" id="widl-Screen-colorDepth">
 <dfn id="widl-Screen-colorDepth"><code>colorDepth</code></dfn> of type <span class="idlAttrType"><a>unsigned long</a></span>, readonly</dt>
 <dd>
-<p>The <code><a href="#widl-Screen-colorDepth">colorDepth</a></code> attribute must return the number of bits allocated to    colors (i.e. excluding the alpha channel) in the output device. If the    output device does not support colors these attributes    must return zero.</dd>
+<p>The <code><a href="#widl-Screen-colorDepth">colorDepth</a></code> attribute must return the number of bits allocated to    colors (i.e. excluding the alpha channel) in the output device. If no    bits are allocated to colors in the output device this attribute    must return zero.</dd>
 <dt class="attribute" id="widl-Screen-pixelDepth">
 <dfn id="widl-Screen-pixelDepth"><code>pixelDepth</code></dfn> of type <span class="idlAttrType"><a>unsigned long</a></span>, readonly</dt>
 <dd>

cssom-view/idl/Screen.idl

@@ -26,8 +26,8 @@ interface Screen {
 
   [Documentation=
    "<p>The {@name} {@type} must return the number of bits allocated to\
-    colors (i.e. excluding the alpha channel) in the output device. If the\
-    output device does not support colors these attributes\
+    colors (i.e. excluding the alpha channel) in the output device. If no\
+    bits are allocated to colors in the output device this attribute\
     must return zero.</p>"
   ]
   readonly attribute unsigned long colorDepth;