arc: Restore Chrome badging for apps that have peer in Android apps.

extensions/browser/app_window/app_window.h

Index: extensions/browser/app_window/app_window.h
diff --git a/extensions/browser/app_window/app_window.h b/extensions/browser/app_window/app_window.h
index 6afc6aabdaef22db1e70643b348c8014deced2bc..73072ef77cebc15d8339b6e46964c82d6b491621 100644
--- a/extensions/browser/app_window/app_window.h
+++ b/extensions/browser/app_window/app_window.h
@@ -360,6 +360,10 @@ class AppWindow : public content::WebContentsDelegate,
   // unblock resource requests.
   void NotifyRenderViewReady();
 
+  // Returns true if window has custom icon in case either |window_icon_url_| or
+  // |app_icon_url_| is set. Custom icon may be not loaded yet.
+  bool HasCustomIcon() const;
+
   // Whether the app window wants to be alpha enabled.
   bool requested_alpha_enabled() const { return requested_alpha_enabled_; }