Bug 835799 - Add a timestamp property to the observer sent when an application has been called by app.launch(). r=fabrice

b2g/chrome/content/shell.js

@@ -837,6 +837,7 @@ var WebappsHelper = {
           let manifest = new ManifestHelper(aManifest, json.origin);
           shell.sendChromeEvent({
             "type": "webapps-launch",
+            "timestamp": json.timestamp,
             "url": manifest.fullLaunchPath(json.startPoint),
             "manifestURL": json.manifestURL
           });

dom/apps/src/Webapps.js

@@ -481,6 +481,7 @@ WebappsApplication.prototype = {
                                               manifestURL: this.manifestURL,
                                               startPoint: aStartPoint || "",
                                               oid: this._id,
+                                              timestamp: Date.now(),
                                               requestID: this.getRequestId(request) });
     return request;
   },