Cleanup some classnames to match style.

chrome/browser/resources/net_internals/dns_view.js

Index: chrome/browser/resources/net_internals/dns_view.js
diff --git a/chrome/browser/resources/net_internals/dns_view.js b/chrome/browser/resources/net_internals/dns_view.js
index 90867b3ef765a2df40ce7db61a08b8ac3bd536c9..67819c924a22e5396766d8b357f3bc5fe87fa6c5 100644
--- a/chrome/browser/resources/net_internals/dns_view.js
+++ b/chrome/browser/resources/net_internals/dns_view.js
@@ -125,7 +125,7 @@ var DnsView = (function() {
           var errorText =
               e.error + ' (' + netErrorToString(e.error) + ')';
           var errorNode = addTextNode(addressesCell, 'error: ' + errorText);
-          changeClassName(addressesCell, 'warningText', true);
+          changeClassName(addressesCell, 'warning-text', true);
         } else {
           for (var j = 0; j < e.addresses.length; ++j) {
             var address = e.addresses[j];
@@ -141,7 +141,7 @@ var DnsView = (function() {
         if (logDate > timeutil.convertTimeTicksToDate(e.expiration)) {
           ++expiredEntries;
           var expiredSpan = addNode(expiresCell, 'span');
-          changeClassName(expiredSpan, 'warningText', true);
+          changeClassName(expiredSpan, 'warning-text', true);
           addTextNode(expiredSpan, ' [Expired]');
         }
       }