Disable NPAPI support

chrome/browser/plugins/enable_npapi_plugins_policy_handler.h

-// 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.
-
-#ifndef CHROME_BROWSER_PLUGINS_ENABLE_NPAPI_PLUGINS_POLICY_HANDLER_H_
-#define CHROME_BROWSER_PLUGINS_ENABLE_NPAPI_PLUGINS_POLICY_HANDLER_H_
-
-#include "base/macros.h"
-#include "components/policy/core/browser/configuration_policy_handler.h"
-
-class PrefValueMap;
-
-namespace policy {
-
-class PolicyErrorMap;
-class PolicyMap;
-
-// ConfigurationPolicyHandler for the plugin policies that re-enable NPAPI.
-class EnableNpapiPluginsPolicyHandler : public ConfigurationPolicyHandler {
- public:
-  EnableNpapiPluginsPolicyHandler();
-
-  ~EnableNpapiPluginsPolicyHandler() override;
-
-  // ConfigurationPolicyHandler methods:
-  void ApplyPolicySettings(const PolicyMap& policies,
-                           PrefValueMap* prefs) override;
-  // ConfigurationPolicyHandler methods:
-  bool CheckPolicySettings(const PolicyMap& policies,
-                           PolicyErrorMap* prefs) override;
-
-  DISALLOW_COPY_AND_ASSIGN(EnableNpapiPluginsPolicyHandler);
-};
-
-}  // namespace policy
-
-#endif  // CHROME_BROWSER_PLUGINS_ENABLE_NPAPI_PLUGINS_POLICY_HANDLER_H_