Implement app banner info bars on desktop.

chrome/browser/extensions/bookmark_app_helper.h

Index: chrome/browser/extensions/bookmark_app_helper.h
diff --git a/chrome/browser/extensions/bookmark_app_helper.h b/chrome/browser/extensions/bookmark_app_helper.h
index cb6a16aa31a30022a02744dd62a50d58f96864db..7239fbefccf3ba21ffb1bde182645b05261ff721 100644
--- a/chrome/browser/extensions/bookmark_app_helper.h
+++ b/chrome/browser/extensions/bookmark_app_helper.h
@@ -98,6 +98,10 @@ class BookmarkAppHelper : public content::NotificationObserver {
   // Begins the asynchronous bookmark app creation.
   void Create(const CreateBookmarkAppCallback& callback);
 
+  // Begins the asynchronous bookmark app creation from an app banner.
+  void CreateFromAppBanner(const CreateBookmarkAppCallback& callback,
+                           const content::Manifest& manifest);
+
  private:
   friend class TestBookmarkAppHelper;
 
@@ -124,6 +128,10 @@ class BookmarkAppHelper : public content::NotificationObserver {
                const content::NotificationSource& source,
                const content::NotificationDetails& details) override;
 
+  // Display the bubble requesting user confirmation. Called when creating a
+  // bookmark app via an add to shelf infobar.
+  void ShowBookmarkAppBubble();
+
   // The profile that the bookmark app is being added to.
   Profile* profile_;