Added flag --enable-hosted-app-shim-creation.

chrome/browser/ui/cocoa/browser_window_cocoa.mm

Index: chrome/browser/ui/cocoa/browser_window_cocoa.mm
diff --git a/chrome/browser/ui/cocoa/browser_window_cocoa.mm b/chrome/browser/ui/cocoa/browser_window_cocoa.mm
index 485ebb18260378ec168646d5fd08dba0d31c2709..579397117116a4b977f57d69fc6ad5fa9fb18fe9 100644
--- a/chrome/browser/ui/cocoa/browser_window_cocoa.mm
+++ b/chrome/browser/ui/cocoa/browser_window_cocoa.mm
@@ -588,12 +588,17 @@ void BrowserWindowCocoa::ShowBookmarkAppBubble(
       extensions::CreateOrUpdateBookmarkApp(service, &new_web_app_info);
     }
 
-    extensions::ExtensionRegistry* registry =
-        extensions::ExtensionRegistry::Get(profile);
-    const extensions::Extension* app = registry->GetExtensionById(
-        extension_id, extensions::ExtensionRegistry::ENABLED);
-
-    web_app::RevealAppShimInFinderForApp(profile, app);
+    // If we're not creating app shims, no need to reveal it in Finder.
+    bool create_app_shims = base::CommandLine::ForCurrentProcess()->HasSwitch(
+        switches::kEnableAppShimCreation);
+    if (create_app_shims) {
+      extensions::ExtensionRegistry* registry =
+          extensions::ExtensionRegistry::Get(profile);
+      const extensions::Extension* app = registry->GetExtensionById(
+          extension_id, extensions::ExtensionRegistry::ENABLED);
+
+      web_app::RevealAppShimInFinderForApp(profile, app);
+    }
   } else {
     service->UninstallExtension(extension_id,
                                 extensions::UNINSTALL_REASON_INSTALL_CANCELED,