Allow chrome.app.window alwaysOnTop property in stable

chrome/browser/extensions/api/app_window/app_window_api.cc

Index: chrome/browser/extensions/api/app_window/app_window_api.cc
diff --git a/chrome/browser/extensions/api/app_window/app_window_api.cc b/chrome/browser/extensions/api/app_window/app_window_api.cc
index d4cf28281f3ac36efb0472bceabb50389c75adbf..94fc15c3398eb625bd97e9d39eaa314285e619d0 100644
--- a/chrome/browser/extensions/api/app_window/app_window_api.cc
+++ b/chrome/browser/extensions/api/app_window/app_window_api.cc
@@ -247,10 +247,8 @@ bool AppWindowCreateFunction::RunImpl() {
     if (options->resizable.get())
       create_params.resizable = *options->resizable.get();
 
-    if (GetCurrentChannel() <= chrome::VersionInfo::CHANNEL_DEV &&
-        options->always_on_top.get()) {
+    if (options->always_on_top.get())
       create_params.always_on_top = *options->always_on_top.get();
-    }
 
     if (options->type != extensions::api::app_window::WINDOW_TYPE_PANEL) {
       switch (options->state) {