Temporarfy fix for IsFullscreenMode

chrome/browser/fullscreen_aura.cc

 // Copyright (c) 2011 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 "base/logging.h"
+#include "ui/aura/client/aura_constants.h"
 #include "ui/aura/desktop.h"
 #include "ui/aura/window.h"
+#include "ui/base/ui_base_types.h"
+
+namespace {
+
+bool CheckIfFullscreenWindowExists(aura::Window* window) {
+  if (window->GetIntProperty(aura::kShowStateKey) == ui::SHOW_STATE_FULLSCREEN)
+    return true;
+  aura::Window::Windows children = window->children();
+  for (aura::Window::Windows::const_iterator i = children.begin();
+       i != children.end();
+       ++i) {
+    if (CheckIfFullscreenWindowExists(*i))
+      return true;
+  }
+  return false;
+}
+
+}  // namespace
 
 bool IsFullScreenMode() {
   // This is used only by notification_ui_manager.cc. On aura, notification
-  // will be managed in panel and no need to provide this functionality.
-  NOTREACHED();
-  return false;
+  // will be managed in panel. This is temporary to get certain feature running
+  // until we implement it for aura.
+  return CheckIfFullscreenWindowExists(aura::Desktop::GetInstance());
 }