Report Metrics on No Card Polling

chrome/browser/resources/google_now/background.js

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 'use strict';
 
 /**
  * @fileoverview The event page for Google Now for Chrome implementation.
  * The Google Now event page gets Google Now cards from the server and shows
  * them as Chrome notifications.
@@ skipping 209 matching lines @@
   REQUEST_FOR_CARDS_SUCCESS: 1,
   CARDS_PARSE_SUCCESS: 2,
   DISMISS_REQUEST_TOTAL: 3,
   DISMISS_REQUEST_SUCCESS: 4,
   LOCATION_REQUEST: 5,
   DELETED_LOCATION_UPDATE: 6,
   EXTENSION_START: 7,
   DELETED_SHOW_WELCOME_TOAST: 8,
   STOPPED: 9,
   DELETED_USER_SUPPRESSED: 10,
-  EVENTS_TOTAL: 11  // EVENTS_TOTAL is not an event; all new events need to be
+  SIGNED_OUT: 11,
+  NOTIFICATION_DISABLED: 12,
+  GOOGLE_NOW_DISABLED: 13,
+  EVENTS_TOTAL: 14  // EVENTS_TOTAL is not an event; all new events need to be
                     // added before it.
 };
 
 /**
  * Records a Google Now Event.
  * @param {GoogleNowEvent} event Event identifier.
  */
 function recordEvent(event) {
   var metricDescription = {
     metricName: 'GoogleNow.Event',
@@ skipping 705 matching lines @@
             chrome.permissions.request({permissions: ['background']});
           else
             chrome.permissions.remove({permissions: ['background']});
         } else {
           console.log('Action Ignored setBackgroundEnable=' + backgroundEnable);
         }
       });
 }
 
 /**
+ * Record why this extension would not poll for cards.
+ * @param {boolean} signedIn true if the user is signed in.
+ * @param {boolean} notificationEnabled true if
+ *     Google Now for Chrome is allowed to show notifications.
+ * @param {boolean} googleNowEnabled true if
+ *     the Google Now is enabled for the user.
+ */
+function recordEventIfNoCards(signedIn, notificationEnabled, googleNowEnabled) {
+  if (!signedIn) {
+    recordEvent(GoogleNowEvent.SIGNED_OUT);
+  } else if (!notificationEnabled) {
+    recordEvent(GoogleNowEvent.NOTIFICATION_DISABLED);
+  } else if (!googleNowEnabled) {
+    recordEvent(GoogleNowEvent.GOOGLE_NOW_DISABLED);
+  }
+}
+
+/**
  * Does the actual work of deciding what Google Now should do
  * based off of the current state of Chrome.
  * @param {boolean} signedIn true if the user is signed in.
  * @param {boolean} canEnableBackground true if
  *     the background permission can be requested.
  * @param {boolean} notificationEnabled true if
  *     Google Now for Chrome is allowed to show notifications.
  * @param {boolean} googleNowEnabled true if
  *     the Google Now is enabled for the user.
  */
@@ skipping 13 matching lines @@
 
   if (signedIn && notificationEnabled) {
     if (canEnableBackground && googleNowEnabled)
       shouldSetBackground = true;
 
     shouldPollCards = true;
   } else {
     recordEvent(GoogleNowEvent.STOPPED);
   }
 
+  recordEventIfNoCards(signedIn, notificationEnabled, googleNowEnabled);
+
   console.log(
       'Requested Actions shouldSetBackground=' + shouldSetBackground + ' ' +
       'setShouldPollCards=' + shouldPollCards);
 
   setBackgroundEnable(shouldSetBackground);
   setShouldPollCards(shouldPollCards);
 }
 
 /**
  * Coordinates the behavior of Google Now for Chrome depending on
@@ skipping 144 matching lines @@
             lastPollNowPayloads: items.lastPollNowPayloads,
             notificationGroups: items.notificationGroups
           });
 
           requestCards();
         }
       });
     });
   }
 });