Add a function to create a bookmark app from a WebApplicationInfo.

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 6218dc3cdad0facc9923619cbd194863c853a20e..af3045a1f393d0c0c09fd6d9616b97036fe7a2b7 100644
--- a/chrome/browser/extensions/bookmark_app_helper.h
+++ b/chrome/browser/extensions/bookmark_app_helper.h
@@ -88,6 +88,11 @@ class BookmarkAppHelper : public content::NotificationObserver {
   content::NotificationRegistrar registrar_;
 };
 
+// Creates or updates a bookmark app from the given |web_app_info|. Icons will
+// not be downloaded so only supplied icon data will be used.
+void CreateOrUpdateBookmarkApp(ExtensionService* service,
+                               WebApplicationInfo& web_app_info);
+
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_BOOKMARK_APP_HELPER_H_