Fix NTP issue because of -webkit-flexbox -> -webkit-flex rename.

R=estade@chromium.org
BUG=None (yet)
TEST=The vertical separator between recently close and webstore footer link works.

Review URL: https://chromiumcodereview.appspot.com/10332274

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@138113 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/resources/ntp4/new_tab.css

@@ -402,8 +402,8 @@ html[dir='rtl'] #chrome-web-store-title {
 
 #footer .menu-container {
   -webkit-flex-align: center;
-  /* Put menus in a flexbox so the order can easily be swapped. */
-  display: -webkit-flexbox;
+  /* Put menus in a flexible box so the order can easily be swapped. */
+  display: -webkit-flex;
   height: 100%;
   margin: 0;
 }