AppModelBuilder to athena.

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 9486d1fef32bdc501cb5b84a344d78c081f188cb..e9af624ebb5e09f4fc2ba06dea01a725fa1eb089 100644
--- a/athena/content/content_activity_factory.cc
+++ b/athena/content/content_activity_factory.cc
@@ -19,4 +19,25 @@ Activity* ContentActivityFactory::CreateWebActivity(
   return new WebActivity(browser_context, url);
 }
 
+Activity* ContentActivityFactory::CreateAppActivity(
+    content::BrowserContext* browser_context,
+    const std::string& app_id) {
+  // TODO(mukai): port the extension system and launch the app actually.
+  GURL url;
+  if (app_id == "mail")
+    url = GURL("https://mail.google.com/");
+  else if (app_id == "calendar")
+    url = GURL("https://calendar.google.com/");
+  else if (app_id == "video")
+    url = GURL("http://youtube.com/");
+  else if (app_id == "music")
+    url = GURL("https://play.google.com/music");
+  else if (app_id == "contact")
+    url = GURL("https://contact.google.com/");
+  else
+    LOG(FATAL) << "Unknown app id: " << app_id;
+  DCHECK(!url.is_empty());
+  return CreateWebActivity(browser_context, url);
+}
+
 }  // namespace athena