filter apps that should not be in athena home card.

athena/content/content_app_model_builder.cc

Index: athena/content/content_app_model_builder.cc
diff --git a/athena/content/content_app_model_builder.cc b/athena/content/content_app_model_builder.cc
index 06cb747c856a9a20a1f648e18df0c9f45ce6b4e6..bdec047aa260faf2a349e5b26a76531790e0be82 100644
--- a/athena/content/content_app_model_builder.cc
+++ b/athena/content/content_app_model_builder.cc
@@ -102,8 +102,11 @@ void ContentAppModelBuilder::PopulateApps(app_list::AppListModel* model) {
   for (extensions::ExtensionSet::const_iterator iter = extensions.begin();
        iter != extensions.end();
        ++iter) {
-    model->AddItem(scoped_ptr<app_list::AppListItem>(
-        new AppItem(*iter, browser_context_)));
+    // TODO(mukai): use chrome/browser/extension_ui_util.
+    if ((*iter)->ShouldDisplayInAppLauncher()) {
+      model->AddItem(scoped_ptr<app_list::AppListItem>(
+          new AppItem(*iter, browser_context_)));
+    }
   }
 
   model->AddItem(scoped_ptr<app_list::AppListItem>(new DummyItem(