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

chrome/browser/extensions/bookmark_app_helper.cc

Index: chrome/browser/extensions/bookmark_app_helper.cc
diff --git a/chrome/browser/extensions/bookmark_app_helper.cc b/chrome/browser/extensions/bookmark_app_helper.cc
index 24ce2f88fd00efb426f072b541bc9108e9580a86..3c5b43d02bd2802001bc09724d1ab1d33a351f23 100644
--- a/chrome/browser/extensions/bookmark_app_helper.cc
+++ b/chrome/browser/extensions/bookmark_app_helper.cc
@@ -12,6 +12,7 @@
 #include "chrome/browser/extensions/tab_helper.h"
 #include "chrome/common/extensions/extension_constants.h"
 #include "chrome/common/extensions/manifest_handlers/app_launch_info.h"
+#include "chrome/common/extensions/manifest_handlers/icons_handler.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_source.h"
 #include "content/public/browser/web_contents.h"
@@ -282,4 +283,12 @@ void BookmarkAppHelper::Observe(int type,
   }
 }
 
+void CreateOrUpdateBookmarkApp(ExtensionService* service,
+                               WebApplicationInfo& web_app_info) {
+  scoped_refptr<extensions::CrxInstaller> installer(
+      extensions::CrxInstaller::CreateSilent(service));
+  installer->set_error_on_unsupported_requirements(true);
+  installer->InstallWebApp(web_app_info);
+}
+
 }  // namespace extensions