Prevent Chrome from quitting when apps are open. (Mac)

apps/pref_names.cc

Index: apps/pref_names.cc
diff --git a/apps/pref_names.cc b/apps/pref_names.cc
index ea08c76ba4ad271e4bd51491c4737c93cf49956e..cd5519ef436764b5559cd341322ad9c61e5b87c0 100644
--- a/apps/pref_names.cc
+++ b/apps/pref_names.cc
@@ -9,8 +9,12 @@ namespace apps {
 namespace prefs {
 
 // A boolean that tracks whether apps are allowed to enter fullscreen mode.
-extern const char kAppFullscreenAllowed[] =
-    "apps.fullscreen.allowed";
+const char kAppFullscreenAllowed[] = "apps.fullscreen.allowed";
+
+// A boolean that tracks whether to show a prompt before quitting when there are
+// apps running.
+const char kNotifyWhenAppsKeepChromeAlive[] =
+    "apps.notify-when-apps-keep-chrome-alive";
 
 }  // namespace prefs