Add new promotional line for NTP....

chrome/browser/resources/new_new_tab.css

 html {
   /* This is needed because of chrome://theme/css/new_tab.css */
   height: 100%;
 }
 
 body {
   margin: 0;
   height: 100%;
   overflow: auto;
   -webkit-user-select: none;
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   margin: 2px auto;
   font-weight: bold;
   opacity: 0;
   pointer-events: none;
   -webkit-transition: opacity .15s;
   z-index: 1;
   color: black;
 }
 
 #notification.first-run {
-  padding: 5px 13px; /* subtract the border witdh */
+  padding: 5px 13px; /* subtract the border width */
   border: 2px solid hsl(213, 55%, 75%);
   background-color: hsl(213, 63%, 93%);
   -webkit-box-shadow: 2px 2px 3px hsla(0, 0%, 0%, .3);
   font-weight: normal;
 }
 
+#notification.promo {
+  padding: 5px 13px; /* subtract the border width */
+  border: 1px solid hsl(0, 0%, 80%);
+  background-color: hsl(120, 93%, 93%);
+  -webkit-box-shadow: 2px 2px 3px hsla(0, 0%, 0%, .3);
+  font-weight: normal;
+}
+
+#notification.promo a {
+  color: rgb(0, 102, 204);
+}
+
 #notification > * {
   display: table-cell;
   max-width: 500px;
   overflow: hidden;
   text-overflow: ellipsis;
 }
 
 #notification.show {
   opacity: 1;
   pointer-events: all;
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   }
 }
 
 /* Ensure we have at least 10px horizontal marging. */
 @media (max-width: 712px) {
   #main {
     margin-left: 10px;
     margin-right: 10px;
   }
 }