Add support for high DPI favicons on the "other devices" menu.

chrome/browser/resources/ntp4/other_sessions.js

Index: chrome/browser/resources/ntp4/other_sessions.js
diff --git a/chrome/browser/resources/ntp4/other_sessions.js b/chrome/browser/resources/ntp4/other_sessions.js
index 59409c989691be6ca9323efb5a944bf52e0623cc..2c28a788ca2bd7646a5e8acfa5c6ba98708c944e 100644
--- a/chrome/browser/resources/ntp4/other_sessions.js
+++ b/chrome/browser/resources/ntp4/other_sessions.js
@@ -212,7 +212,8 @@ cr.define('ntp', function() {
           a.className = 'footer-menu-item';
           a.textContent = tab.title;
           a.href = tab.url;
-          a.style.backgroundImage = url('chrome://session-favicon/' + tab.url);
+          a.style.backgroundImage = url(
+              getFaviconUrl(tab.url, 16, /* session-favicon */ true));
 
           var clickHandler = this.makeClickHandler_(
               session.tag, String(window.sessionId), String(tab.sessionId));