Chrome OS Accessibility: enable cursor compositing when screen magnifier is enabled.

chrome/browser/chromeos/accessibility/magnification_manager.cc

 // Copyright (c) 2012 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/chromeos/accessibility/magnification_manager.h"
 
 #include <limits>
 
 #include "ash/magnifier/magnification_controller.h"
 #include "ash/magnifier/partial_magnification_controller.h"
@@ skipping 181 matching lines @@
       SetMagnifierTypeInternal(type);
       SetMagnifierEnabledInternal(enabled);
     }
 
     AccessibilityStatusEventDetails details(
         enabled_, type_, ash::A11Y_NOTIFICATION_NONE);
     content::NotificationService::current()->Notify(
         chrome::NOTIFICATION_CROS_ACCESSIBILITY_TOGGLE_SCREEN_MAGNIFIER,
         content::NotificationService::AllSources(),
         content::Details<AccessibilityStatusEventDetails>(&details));
+
+#if defined(OS_CHROMEOS)
+    if (ash::Shell::GetInstance() && AccessibilityManager::Get()) {
+      ash::Shell::GetInstance()->SetCursorCompositingEnabled(
+          AccessibilityManager::Get()->ShouldEnableCursorCompositing());
+    }
+#endif
   }
 
   // content::NotificationObserver implementation:
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE {
     switch (type) {
       case chrome::NOTIFICATION_LOGIN_OR_LOCK_WEBUI_VISIBLE: {
         // Update |profile_| when entering the login screen.
         Profile* profile = ProfileManager::GetActiveUserProfile();
@@ skipping 49 matching lines @@
   delete g_magnification_manager;
   g_magnification_manager = NULL;
 }
 
 // static
 MagnificationManager* MagnificationManager::Get() {
   return g_magnification_manager;
 }
 
 }  // namespace chromeos