Temporarfy fix for IsFullscreenMode

chrome/browser/fullscreen_aura.cc

Index: chrome/browser/fullscreen_aura.cc
diff --git a/chrome/browser/fullscreen_aura.cc b/chrome/browser/fullscreen_aura.cc
index 593748769794c23a6c1cc7141d25b147d17ddb1b..7dc8d024a2a857a12dadb498e013dd743c3d4d5e 100644
--- a/chrome/browser/fullscreen_aura.cc
+++ b/chrome/browser/fullscreen_aura.cc
@@ -5,12 +5,31 @@
 #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());
 }