Enable NPAPI if policy has plugin policies.

chrome/browser/plugins/enable_npapi_plugins_policy_handler.h

Index: chrome/browser/plugins/enable_npapi_plugins_policy_handler.h
diff --git a/chrome/browser/plugins/enable_npapi_plugins_policy_handler.h b/chrome/browser/plugins/enable_npapi_plugins_policy_handler.h
new file mode 100644
index 0000000000000000000000000000000000000000..4ce549a474d04992c6eed8cf72faf1ae9a659ad7
--- /dev/null
+++ b/chrome/browser/plugins/enable_npapi_plugins_policy_handler.h
@@ -0,0 +1,37 @@
+// 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_