Show app list items which open in chrome with a tab overlay.

chrome/browser/ui/app_list/extension_app_item.h

Index: chrome/browser/ui/app_list/extension_app_item.h
diff --git a/chrome/browser/ui/app_list/extension_app_item.h b/chrome/browser/ui/app_list/extension_app_item.h
index e75f3163809c85db6a46c92773ab21a2fd828fe2..5513076c93ab72ad78e62b926f636197133864f9 100644
--- a/chrome/browser/ui/app_list/extension_app_item.h
+++ b/chrome/browser/ui/app_list/extension_app_item.h
@@ -51,6 +51,12 @@ class ExtensionAppItem : public ChromeAppListItem,
   // Loads extension icon.
   void LoadImage(const extensions::Extension* extension);
 
+  // Whether or not the app item has an overlay.
+  bool HasOverlay();
+
+  // Sets the app item's icon, if necessary adding an overlay.
+  void SetIconWithOverlay(const gfx::ImageSkia& icon);
+
   void ShowExtensionOptions();
   void ShowExtensionDetails();
   void StartExtensionUninstall();