De-suck the NTP a bit more:

chrome/browser/resources/ntp/most_visited.js

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Dependencies that we should remove/formalize:
 // ../shared/js/class_list.js
 // util.js
 //
 // afterTransition
 // chrome.send
@@ skipping 543 matching lines @@
         var faviconUrl = d.faviconUrl || 'chrome://favicon/' + d.url;
         titleDiv.style.backgroundImage = url(faviconUrl);
         titleDiv.dir = d.direction;
       }
     },
 
     updateMiniview_: function() {
       this.miniview.textContent = '';
       var data = this.data.slice(0, MAX_MINIVIEW_ITEMS);
       for (var i = 0, item; item = data[i]; i++) {
+        if (item.filler) {
+          continue;
+        }
+
         var span = document.createElement('span');
         var a = span.appendChild(document.createElement('a'));
         a.href = item.url;
         a.textContent = item.title;
         a.style.backgroundImage = url('chrome://favicon/' + item.url);
         a.className = 'item';
         this.miniview.appendChild(span);
+
+        if ((a.offsetLeft + a.offsetWidth) > this.miniview.offsetWidth) {
+          this.miniview.removeChild(span);
+          return;
+        }
       }
     },
 
     handleClick_: function(e) {
       var target = e.target;
       if (target.classList.contains('pin')) {
         this.togglePinned_(getItem(target));
         e.preventDefault();
       } else if (target.classList.contains('remove')) {
         this.blacklist(getItem(target));
@@ skipping 15 matching lines @@
     handleKeyDown_: function(e) {
       if (!IS_MAC && e.keyCode == 46 || // Del
           IS_MAC && e.metaKey && e.keyCode == 8) { // Cmd + Backspace
         this.blacklist(e.target);
       }
     }
   };
 
   return MostVisited;
 })();