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

ash/wm/window_util.cc

Index: ash/wm/window_util.cc
diff --git a/ash/wm/window_util.cc b/ash/wm/window_util.cc
index 481a27cbc8a2bba583409e0afe69fd52cba5bf3e..1936f9feaa1131554c81fc88787cc9b2c8f5ee95 100644
--- a/ash/wm/window_util.cc
+++ b/ash/wm/window_util.cc
@@ -50,18 +50,6 @@ aura::Window* GetActivatableWindow(aura::Window* window) {
   return views::corewm::GetActivatableWindow(window);
 }
 
-bool IsActiveWindowFullscreen() {
-  aura::Window* window = GetActiveWindow();
-  while (window) {
-    if (window->GetProperty(aura::client::kShowStateKey) ==
-        ui::SHOW_STATE_FULLSCREEN) {
-      return true;
-    }
-    window = window->parent();
-  }
-  return false;
-}
-
 bool CanActivateWindow(aura::Window* window) {
   return views::corewm::CanActivateWindow(window);
 }