Adds the NewTabPage.SuggestedSitesAction stat.

chrome/browser/resources/ntp4/suggestions_page.js

Index: chrome/browser/resources/ntp4/suggestions_page.js
===================================================================
--- chrome/browser/resources/ntp4/suggestions_page.js	(revision 130353)
+++ chrome/browser/resources/ntp4/suggestions_page.js	(working copy)
@@ -134,6 +134,7 @@
         // Records the index of this tile.
         chrome.send('metricsHandler:recordInHistogram',
                     ['NewTabPage.SuggestedSite', this.index, 8]);
+        chrome.send('suggestedSitesAction', [1]);

[Evan Stade, 2012/04/03 22:52:33]

you need an enum, don't just toss magic values around.

why is any other kind of navigation away from suggested (omnibox, use of
bookmark) at all interesting?

[macourteau, 2012/04/04 19:41:09]

Done.

       }
     },
 
@@ -286,6 +287,9 @@
       this.classList.add('suggestions-page');
       this.data_ = null;
       this.suggestionsTiles_ = this.getElementsByClassName('suggestions real');
+
+      this.addEventListener('carddeselected', this.handleCardDeselected_);
+      this.addEventListener('cardselected', this.handleCardSelected_);
     },
 
     /**
@@ -314,6 +318,24 @@
     },
 
     /**
+     * Handles the 'card deselected' event (i.e. the user clicked to another
+     * pane).
+     * @param {Event} e The CardChanged event.
+     */
+    handleCardDeselected_: function(e) {
+      chrome.send('suggestedSitesAction', [2]);
+    },
+
+    /**
+     * Handles the 'card selected' event (i.e. the user clicked to select the
+     * Suggested pane).
+     * @param {Event} e The CardChanged event.
+     */
+    handleCardSelected_: function(e) {
+      chrome.send('suggestedSitesSelected');
+    },
+
+    /**
      * Array of suggestions data objects.
      * @type {Array}
      */