Add a flag to enable open in window for hosted apps on Mac.

chrome/browser/extensions/extension_util.cc

Index: chrome/browser/extensions/extension_util.cc
diff --git a/chrome/browser/extensions/extension_util.cc b/chrome/browser/extensions/extension_util.cc
index abf76f36e855b5d167f7b742b33eeab3c8a15899..c1e1c174b650f0bd1206079b6c143e326ee05066 100644
--- a/chrome/browser/extensions/extension_util.cc
+++ b/chrome/browser/extensions/extension_util.cc
@@ -366,6 +366,15 @@ bool IsNewBookmarkAppsEnabled() {
 #endif
 }
 
+bool CanHostedAppsOpenInWindows() {
+#if defined(OS_MACOSX)
+  return base::CommandLine::ForCurrentProcess()->HasSwitch(
+      switches::kEnableHostedAppsInWindows);
+#else
+  return true;
+#endif
+}
+
 bool IsExtensionSupervised(const Extension* extension, Profile* profile) {
   return extension->was_installed_by_custodian() && profile->IsSupervised();
 }