Enable NPAPI if policy has plugin policies.

chrome/browser/plugins/plugin_policy_handler.cc

+// 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 "chrome/browser/plugins/plugin_policy_handler.h"
+
+#include "base/logging.h"
+#include "base/prefs/pref_value_map.h"
+#include "base/values.h"
+#include "chrome/common/pref_names.h"
+#include "components/policy/core/browser/policy_error_map.h"
+#include "components/policy/core/common/policy_map.h"
+#include "policy/policy_constants.h"
+
+namespace policy {
+
+PluginPolicyHandler::PluginPolicyHandler() {}
+
+PluginPolicyHandler::~PluginPolicyHandler() {}
+
+void PluginPolicyHandler::ApplyPolicySettings(const PolicyMap& policies,
+                                              PrefValueMap* prefs) {
+  const std::string plugin_policies[] = { key::kEnabledPlugins,
+                                          key::kPluginsAllowedForUrls,
+                                          key::kPluginsBlockedForUrls,
+                                          key::kDisabledPluginsExceptions,
+                                          key::kDisabledPlugins };
+
+  for (auto policy : plugin_policies) {
+    if (policies.GetValue(policy)) {
+      prefs->SetBoolean(prefs::kEnableNpapi, true);
+      break;
+    }
+  }
+}
+
+bool PluginPolicyHandler::CheckPolicySettings(const PolicyMap& policies,
+                                              PolicyErrorMap* prefs) {
+  return true;
+}
+
+}  // namespace policy