Initialize remoting.ClientSession.PerfStats with zeros

remoting/webapp/base/js/connection_stats.js

Index: remoting/webapp/base/js/connection_stats.js
diff --git a/remoting/webapp/base/js/connection_stats.js b/remoting/webapp/base/js/connection_stats.js
index 9d163663d380abf25cc7614c82c3fc498417d96e..5f3d268557861732f31aac655f5ab7bc8622dfb6 100644
--- a/remoting/webapp/base/js/connection_stats.js
+++ b/remoting/webapp/base/js/connection_stats.js
@@ -121,28 +121,23 @@ remoting.ConnectionStats.prototype.update = function(stats) {
   }
 
   /**
-   * @param {number} value
+   * @param {!number} value
    * @param {string} units
    * @param {number} digits
    * @return {string} Formatted number.
    */
   function formatStatNumber(value, units, digits) {
-    if (value != undefined) {
-      return value.toFixed(digits) + ' ' + units;
-    } else {
-      return "n/a";
-    }
+    return value.toFixed(digits) + ' ' + units;
   }
 
   /**
    * @param {string} type
-   * @param {number} avg
-   * @param {number} max
+   * @param {!number} avg
+   * @param {!number} max
    * @return {string} "type: avg, max; " e.g. "RTT: 8.0, 13; "
    */
   function formatStat(type, avg, max) {
-    var avgStr = (avg == undefined) ? 'n/a' : avg.toFixed(1);
-    return type + ': ' + avgStr + ', ' + max + '; ';
+    return type + ': ' + avg.toFixed(1) + ', ' + max + '; ';
   }
 
   var statistics = document.getElementById('statistics');