ntp4: record app launch source

chrome/browser/resources/ntp4/apps_page.js

Index: chrome/browser/resources/ntp4/apps_page.js
diff --git a/chrome/browser/resources/ntp4/apps_page.js b/chrome/browser/resources/ntp4/apps_page.js
index 50cfdd20b6ac22c4ea5117a49ffe4e48eb7d9d81..24a58a7554af0b87dfa81ba8324e06c20cef43a3 100644
--- a/chrome/browser/resources/ntp4/apps_page.js
+++ b/chrome/browser/resources/ntp4/apps_page.js
@@ -194,6 +194,7 @@ cr.define('ntp4', function() {
 
       var appSpan = this.ownerDocument.createElement('span');
       appSpan.textContent = this.appData_.name;
+      appSpan.addEventListener('click', this.onClick_.bind(this));

[Rick Byers, 2011/08/03 14:41:11]

Why add a handler to both the img and span.  Would it be equivalent to put just
a single handler on the appContents?

[Evan Stade, 2011/08/03 22:11:22]

the clickable contour is a little different

       appContents.appendChild(appSpan);
       this.appendChild(appContents);
 
@@ -436,6 +437,7 @@ cr.define('ntp4', function() {
   };
 
   return {
+    APP_LAUNCH: APP_LAUNCH,
     AppsPage: AppsPage,
   };
 });