Fix performance issues with NNTP....

chrome/browser/resources/new_new_tab.css

Index: chrome/browser/resources/new_new_tab.css
===================================================================
--- chrome/browser/resources/new_new_tab.css	(revision 19722)
+++ chrome/browser/resources/new_new_tab.css	(working copy)
@@ -540,18 +540,20 @@
 #lower-sections .section {
   -webkit-transition: width .5s, opacity .5s, left .5s;
   -webkit-box-sizing: border-box;
+  width: 460px; /* Set default size so we don't have to do a js layout at
+                   load */
 }
 
+.small #lower-sections .section {
+  width: 336px; /* Same here, see above */
+}
+
 #lower-sections .spacer {
   width: 20px;
   -webkit-transition: width .5s;
   display: inline-block;
 }
 
-.loading * {
-  -webkit-transition: none;
-}
-
 #thumb-checkbox {
   background-image: url(chrome://theme/newtab_thumb_off);
 }