Manifest handler for all keys background-related.

chrome/browser/background/background_application_list_model.cc

Index: chrome/browser/background/background_application_list_model.cc
diff --git a/chrome/browser/background/background_application_list_model.cc b/chrome/browser/background/background_application_list_model.cc
index 9c5aad597f217088ad0ed24a9f0bb3866bbed63d..a039ece523ca93d125b48cec757067faa8dc216a 100644
--- a/chrome/browser/background/background_application_list_model.cc
+++ b/chrome/browser/background/background_application_list_model.cc
@@ -21,6 +21,7 @@
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chrome/common/extensions/api/icons/icons_handler.h"
+#include "chrome/common/extensions/background_info.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_constants.h"
 #include "chrome/common/extensions/extension_icon_set.h"
@@ -287,7 +288,7 @@ bool BackgroundApplicationListModel::IsBackgroundApp(
     return true;
 
   // Hosted apps with manifest-provided background pages are background apps.
-  if (extension.has_background_page())
+  if (extensions::BackgroundInfo::HasBackgroundPage(&extension))
     return true;
 
   BackgroundContentsService* service =