Add actiivity in factory

athena/content/content_activity_factory.cc

Index: athena/content/content_activity_factory.cc
diff --git a/athena/content/content_activity_factory.cc b/athena/content/content_activity_factory.cc
index ef00f1c9996ed347442719d1a480a089e86c0b80..2d8867e601cf8ea16923c44a0a71da1743720315 100644
--- a/athena/content/content_activity_factory.cc
+++ b/athena/content/content_activity_factory.cc
@@ -4,6 +4,7 @@
 
 #include "athena/content/content_activity_factory.h"
 
+#include "athena/activity/public/activity_manager.h"
 #include "athena/content/app_activity.h"
 #include "athena/content/web_activity.h"
 #include "base/logging.h"
@@ -19,13 +20,17 @@ Activity* ContentActivityFactory::CreateWebActivity(
     content::BrowserContext* browser_context,
     const base::string16& title,
     const GURL& url) {
-  return new WebActivity(browser_context, title, url);
+  Activity* activity = new WebActivity(browser_context, title, url);
+  ActivityManager::Get()->AddActivity(activity);
+  return activity;
 }
 
 Activity* ContentActivityFactory::CreateAppActivity(
     extensions::AppWindow* app_window,
     views::WebView* web_view) {
-  return new AppActivity(app_window, web_view);
+  Activity* activity = new AppActivity(app_window, web_view);
+  ActivityManager::Get()->AddActivity(activity);
+  return activity;
 }
 
 ActivityFactory* CreateContentActivityFactory() {