UMA Histograms for Register Promos

Add UMA histograms for register promos.

BUG=350228

Review URL: https://codereview.chromium.org/189623004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@255827 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/resources/print_preview/metrics.js

@@ -46,7 +46,11 @@ cr.define('print_preview', function() {
     PRIVET_DUPLICATE_SELECTED: 5,
     // Used when a user selects the cloud printer in a pair of duplicate
     // privet and cloud printers.
-    CLOUD_DUPLICATE_SELECTED: 6
+    CLOUD_DUPLICATE_SELECTED: 6,
+    // Used when a user sees a register promo for a cloud print printer.
+    REGISTER_PROMO_SHOWN: 7,
+    // Used when a user selects a register promo for a cloud print printer.
+    REGISTER_PROMO_SELECTED: 8
   };
 
   /**

chrome/browser/resources/print_preview/print_preview.js

@@ -722,6 +722,8 @@ cr.define('print_preview', function() {
      * @private
      */
      onCloudPrintRegisterPromoClick_: function(e) {
+       this.metrics_.incrementDestinationSearchBucket(
+         print_preview.Metrics.DestinationSearchBucket.REGISTER_PROMO_SELECTED);
        var devicesUrl = 'chrome://devices/register?id=' + e.destination.id;
        this.nativeLayer_.startForceOpenNewTab(devicesUrl);
        this.destinationStore_.waitForRegister(e.destination.id);

chrome/browser/resources/print_preview/search/destination_search.js

@@ -42,6 +42,14 @@ cr.define('print_preview', function() {
      */
     this.metrics_ = metrics;
 
+    /**
+     * Whether or not a UMA histogram for the register promo being shown was
+     * already recorded.
+     * @type {bool}
+     * @private
+     */
+    this.registerPromoShownMetricRecorded_ = false;
+
     /**
      * Search box used to search through the destination lists.
      * @type {!print_preview.SearchBox}
@@ -322,6 +330,13 @@ cr.define('print_preview', function() {
         }
       });
 
+      if (unregisteredCloudDestinations.length != 0 &&
+          !this.registerPromoShownMetricRecorded_) {
+        this.metrics_.incrementDestinationSearchBucket(
+          print_preview.Metrics.DestinationSearchBucket.REGISTER_PROMO_SHOWN);
+        this.registerPromoShownMetricRecorded_ = true;
+      }
+
       var finalCloudDestinations = unregisteredCloudDestinations.slice(
         0, DestinationSearch.MAX_PROMOTED_UNREGISTERED_PRINTERS_).concat(
           cloudDestinations,

chrome/browser/ui/webui/print_preview/print_preview_handler.cc

@@ -127,6 +127,8 @@ enum PrintDestinationBuckets {
   SIGNIN_TRIGGERED,
   PRIVET_DUPLICATE_SELECTED,
   CLOUD_DUPLICATE_SELECTED,
+  REGISTER_PROMO_SHOWN,
+  REGISTER_PROMO_SELECTED,
   PRINT_DESTINATION_BUCKET_BOUNDARY
 };