Adding metrics for notification clicks and dismissals

chrome/browser/resources/google_now/background.js

Index: chrome/browser/resources/google_now/background.js
diff --git a/chrome/browser/resources/google_now/background.js b/chrome/browser/resources/google_now/background.js
index 32830a4bbbd4d3d89eafadb629a67892f41e1646..f74a22d18d2212680f48204297eb5a939ddfd376 100644
--- a/chrome/browser/resources/google_now/background.js
+++ b/chrome/browser/resources/google_now/background.js
@@ -438,6 +438,8 @@ function onNotificationClosed(notificationId, byUser) {
   if (!byUser)
     return;
 
+  metrics.recordUserAction('Dismissed');
+
   tasks.add(DISMISS_CARD_TASK_NAME, function(callback) {
     // Schedule retrying dismissing until all dismissals go through.
     // TODO(vadimt): Implement exponential backoff and unify it with getting
@@ -516,6 +518,7 @@ chrome.alarms.onAlarm.addListener(function(alarm) {
 
 chrome.notifications.onClicked.addListener(
     function(notificationId) {
+      metrics.recordUserAction('MessageClicked');
       onNotificationClicked(notificationId, function(actionUrls) {
         return actionUrls.messageUrl;
       });
@@ -523,6 +526,7 @@ chrome.notifications.onClicked.addListener(
 
 chrome.notifications.onButtonClicked.addListener(
     function(notificationId, buttonIndex) {
+      metrics.recordUserAction('ButtonClicked' + buttonIndex);
       onNotificationClicked(notificationId, function(actionUrls) {
         if (!Array.isArray(actionUrls.buttonUrls))
           return undefined;