[Refactor] Replace kFullscreenUsesMinimalChromeKey with WindowState::hide_shelf_when_fullscreen()

chrome/browser/notifications/fullscreen_notification_blocker.cc

 // Copyright 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/notifications/fullscreen_notification_blocker.h"
 
 #include "base/time/time.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/fullscreen.h"
 #include "content/public/browser/notification_service.h"
 
 #if defined(USE_ASH)
 #include "ash/root_window_controller.h"
 #include "ash/shell.h"
 #include "ash/system/system_notifier.h"
-#include "ash/wm/window_properties.h"
+#include "ash/wm/window_state.h"
 #include "ui/aura/root_window.h"
 #include "ui/aura/window.h"
 #endif
 
 namespace {
 
 bool DoesFullscreenModeBlockNotifications() {
 #if defined(USE_ASH)
   if (ash::Shell::HasInstance()) {
     ash::internal::RootWindowController* controller =
         ash::internal::RootWindowController::ForTargetRootWindow();
 
     // During shutdown |controller| can be NULL.
     if (!controller)
       return false;
 
     const aura::Window* fullscreen_window =
         controller->GetTopmostFullscreenWindow();
 
-    // Should appear notifications if kFullscreenUsesMinimalChromeKey is set,
-    // since shelf/message_center UI is visible in such situation.
-    return fullscreen_window && !fullscreen_window->GetProperty(
-        ash::internal::kFullscreenUsesMinimalChromeKey);
+    // Notifications should appear if the fullscreen type is
+    // ash::wm::FULLSCREEN_TYPE_IMMERSIVE_MINIMAL_CHROME because the shelf and
+    // message center UI are visible in this case.
+    if (!fullscreen_window)
+      return false;
+    return ash::wm::GetWindowState(fullscreen_window)->fullscreen_type() !=
+        ash::wm::FULLSCREEN_TYPE_IMMERSIVE_MINIMAL_CHROME;
   }
 #endif
 
   return IsFullScreenMode();
 }
 
 }  // namespace
 
 FullscreenNotificationBlocker::FullscreenNotificationBlocker(
     message_center::MessageCenter* message_center)
@@ skipping 27 matching lines @@
   return enabled;
 }
 
 void FullscreenNotificationBlocker::Observe(
     int type,
     const content::NotificationSource& source,
     const content::NotificationDetails& details) {
   DCHECK_EQ(chrome::NOTIFICATION_FULLSCREEN_CHANGED, type);
   CheckState();
 }