Cleanup some classnames to match style.

chrome/browser/resources/net_internals/dns_view.html

Index: chrome/browser/resources/net_internals/dns_view.html
diff --git a/chrome/browser/resources/net_internals/dns_view.html b/chrome/browser/resources/net_internals/dns_view.html
index 70d913601484d1ece4afb20066bd0a234a5aaa47..4eb6ce4fb0b793ae2b5887beab78980874bb781e 100644
--- a/chrome/browser/resources/net_internals/dns_view.html
+++ b/chrome/browser/resources/net_internals/dns_view.html
@@ -1,10 +1,10 @@
 <!-- Host resolver info -->
-<div id=dns-view-tab-content>
+<div id=dns-view-tab-content class=content-box>
   <h4>Host resolver</h4>
   <ul>
     <li><a href='#events&q=type:HOST_RESOLVER_IMPL_REQUEST%20type:HOST_RESOLVER_IMPL_JOB%20is:active'>View pending lookups</a></li>
     <li>Default address family: <span id=dns-view-default-family></span>
-      <span id=dns-view-ipv6-disabled class=warningText style="display: none;">
+      <span id=dns-view-ipv6-disabled class=warning-text style="display: none;">
         (IPv6 disabled)
         <input type=button value="Enable IPv6" id=dns-view-enable-ipv6 />
       </span>
@@ -26,7 +26,7 @@
     <li>Expired entries: <span id=dns-view-cache-expired></span></li>
   </ul>
 
-  <table class="styledTable">
+  <table class="styled-table">
     <thead>
       <tr>
         <th>Hostname</th>