diff --git a/dom/network/interfaces/nsIDOMNetworkStats.idl b/dom/network/interfaces/nsIDOMNetworkStats.idl
index ae9fb9f3bbe6..f3419d93fe2e 100644
--- a/dom/network/interfaces/nsIDOMNetworkStats.idl
+++ b/dom/network/interfaces/nsIDOMNetworkStats.idl
@@ -12,9 +12,15 @@ interface nsIDOMMozNetworkStatsData : nsISupports
   readonly attribute jsval           date;      // Date.
 };
 
-[scriptable, builtinclass, uuid(037435a6-f563-48f3-99b3-a0106d8ba5bd)]
+[scriptable, builtinclass, uuid(6613ea55-b99c-44f9-91bf-d07da10b9b74)]
 interface nsIDOMMozNetworkStats : nsISupports
 {
+  /**
+   * Manifest URL of an application for specifying the per-app
+   * stats of the specified app. If null, system stats are returned.
+   */
+  readonly attribute DOMString    manifestURL;
+
   /**
    * Can be 'mobile', 'wifi' or null.
    * If null, stats for both mobile and wifi are returned.
diff --git a/dom/network/src/NetworkStatsManager.js b/dom/network/src/NetworkStatsManager.js
index 22f7845fd069..f1d65e93bb6f 100644
--- a/dom/network/src/NetworkStatsManager.js
+++ b/dom/network/src/NetworkStatsManager.js
@@ -57,13 +57,14 @@ NetworkStatsData.prototype = {
 
 // NetworkStats
 const NETWORKSTATS_CONTRACTID = "@mozilla.org/networkstats;1";
-const NETWORKSTATS_CID        = Components.ID("{037435a6-f563-48f3-99b3-a0106d8ba5bd}");
+const NETWORKSTATS_CID        = Components.ID("{6613ea55-b99c-44f9-91bf-d07da10b9b74}");
 const nsIDOMMozNetworkStats   = Components.interfaces.nsIDOMMozNetworkStats;
 
 function NetworkStats(aWindow, aStats) {
   if (DEBUG) {
     debug("NetworkStats Constructor");
   }
+  this.manifestURL = aStats.manifestURL || null;
   this.connectionType = aStats.connectionType || null;
   this.start = aStats.start || null;
   this.end = aStats.end || null;
@@ -76,6 +77,7 @@ function NetworkStats(aWindow, aStats) {
 
 NetworkStats.prototype = {
   __exposedProps__: {
+                      manifestURL: 'r',
                       connectionType: 'r',
                       start: 'r',
                       end:  'r',
diff --git a/dom/network/src/NetworkStatsManager.manifest b/dom/network/src/NetworkStatsManager.manifest
index 58d1c2363eab..f0b82a323871 100644
--- a/dom/network/src/NetworkStatsManager.manifest
+++ b/dom/network/src/NetworkStatsManager.manifest
@@ -1,8 +1,8 @@
 component {3b16fe17-5583-483a-b486-b64a3243221c} NetworkStatsManager.js
 contract @mozilla.org/networkStatsdata;1 {3b16fe17-5583-483a-b486-b64a3243221c}
 
-component {037435a6-f563-48f3-99b3-a0106d8ba5bd} NetworkStatsManager.js
-contract @mozilla.org/networkStats;1 {037435a6-f563-48f3-99b3-a0106d8ba5bd}
+component {6613ea55-b99c-44f9-91bf-d07da10b9b74} NetworkStatsManager.js
+contract @mozilla.org/networkStats;1 {6613ea55-b99c-44f9-91bf-d07da10b9b74}
 
 component {87529a6c-aef6-11e1-a595-4f034275cfa6} NetworkStatsManager.js
 contract @mozilla.org/networkStatsManager;1 {87529a6c-aef6-11e1-a595-4f034275cfa6}