Hide the tab indicators and the shelf when in immersive + tab fullscreen

chrome/browser/fullscreen_chromeos.cc

Index: chrome/browser/fullscreen_chromeos.cc
diff --git a/chrome/browser/fullscreen_chromeos.cc b/chrome/browser/fullscreen_chromeos.cc
new file mode 100644
index 0000000000000000000000000000000000000000..a2adffa91aa9d622e9853ffa7a24268972de60ea
--- /dev/null
+++ b/chrome/browser/fullscreen_chromeos.cc
@@ -0,0 +1,13 @@
+// Copyright (c) 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/browser/fullscreen.h"
+
+#include "ash/root_window_controller.h"
+
+bool IsFullScreenMode() {
+  ash::internal::RootWindowController* controller =
+      ash::internal::RootWindowController::ForActiveRootWindow();
+  return controller && controller->GetFullscreenWindow();
+}