Create hosted app shims on Mac.

chrome/test/data/extensions/api_test/management/test/launchType.js

Index: chrome/test/data/extensions/api_test/management/test/launchType.js
diff --git a/chrome/test/data/extensions/api_test/management/test/launchType.js b/chrome/test/data/extensions/api_test/management/test/launchType.js
index bb2ccb43e35fa0db78d3a6425e60bdcce6a675f2..493139207bc1f4844df2d7412f02688c35e7df98 100644
--- a/chrome/test/data/extensions/api_test/management/test/launchType.js
+++ b/chrome/test/data/extensions/api_test/management/test/launchType.js
@@ -3,7 +3,6 @@
 // found in the LICENSE file.
 
 var enabled_app, disabled_app, enabled_extension, packaged_app;
-var isMac = /Mac/.test(navigator.platform);
 var streamlinedHostedAppsEnabled =
     (location.href.indexOf("streamlined-hosted-apps") != -1);
 var allLaunchTypes = ["OPEN_AS_REGULAR_TAB",
@@ -33,9 +32,7 @@ function getAvailableLaunchTypes(app) {
   }
 
   types.push("OPEN_AS_REGULAR_TAB");
-
-  if (!isMac)
-    types.push("OPEN_AS_WINDOW");
+  types.push("OPEN_AS_WINDOW");
 
   if (!streamlinedHostedAppsEnabled) {
     types.push("OPEN_AS_PINNED_TAB");