Revert of Remove javaEnabled setting.

Source/modules/plugins/NavigatorPlugins.cpp

 // Copyright 2015 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 "config.h"
 #include "modules/plugins/NavigatorPlugins.h"
 
 #include "core/frame/LocalFrame.h"
 #include "core/frame/Navigator.h"
 #include "core/frame/Settings.h"
@@ skipping 42 matching lines @@
 
 // static
 DOMMimeTypeArray* NavigatorPlugins::mimeTypes(Navigator& navigator)
 {
     return NavigatorPlugins::from(navigator).mimeTypes(navigator.frame());
 }
 
 // static
 bool NavigatorPlugins::javaEnabled(Navigator& navigator)
 {
-    return false;
+    return NavigatorPlugins::from(navigator).javaEnabled(navigator.frame());
 }
 
 DOMPluginArray* NavigatorPlugins::plugins(LocalFrame* frame) const
 {
     if (!m_plugins)
         m_plugins = DOMPluginArray::create(frame);
     return m_plugins.get();
 }
 
 DOMMimeTypeArray* NavigatorPlugins::mimeTypes(LocalFrame* frame) const
 {
     if (!m_mimeTypes)
         m_mimeTypes = DOMMimeTypeArray::create(frame);
     return m_mimeTypes.get();
 }
 
+bool NavigatorPlugins::javaEnabled(LocalFrame* frame) const
+{
+    if (!frame || !frame->settings())
+        return false;
+
+    return frame->settings()->javaEnabled();
+}
+
 DEFINE_TRACE(NavigatorPlugins)
 {
     visitor->trace(m_plugins);
     visitor->trace(m_mimeTypes);
     HeapSupplement<Navigator>::trace(visitor);
     DOMWindowProperty::trace(visitor);
 }
 
 } // namespace blink