Disable incognito if parental controls are enabled on android.

chrome/browser/android/chromium_application.h

 // 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.
 
 #ifndef CHROME_BROWSER_ANDROID_CHROMIUM_APPLICATION_H_
 #define CHROME_BROWSER_ANDROID_CHROMIUM_APPLICATION_H_
 
 #include <jni.h>
 
 #include "base/basictypes.h"
@@ skipping 10 matching lines @@
 
   // Opens a protected content settings page, if available.
   static void OpenProtectedContentSettings();
 
   // Opens the sync settings page.
   static void ShowSyncSettings();
 
   // Shows a dialog with the terms of service.
   static void ShowTermsOfServiceDialog();
 
+  // Determines whether parental controls are enabled.
+  static bool AreParentalControlsEnabled();
+
  private:
   ChromiumApplication() {}
   ~ChromiumApplication() {}
 
   DISALLOW_COPY_AND_ASSIGN(ChromiumApplication);
 };
 
 }  // namespace android
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_ANDROID_CHROMIUM_APPLICATION_H_