Enable NPAPI if policy has plugin policies.

chrome/browser/plugins/enable_npapi_plugins_policy_handler.cc

Index: chrome/browser/plugins/enable_npapi_plugins_policy_handler.cc
diff --git a/chrome/browser/plugins/enable_npapi_plugins_policy_handler.cc b/chrome/browser/plugins/enable_npapi_plugins_policy_handler.cc
new file mode 100644
index 0000000000000000000000000000000000000000..c3419c9e0b384c6fef410ee93fed08987950bca0
--- /dev/null
+++ b/chrome/browser/plugins/enable_npapi_plugins_policy_handler.cc
@@ -0,0 +1,46 @@
+// 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/enable_npapi_plugins_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 {
+
+EnableNpapiPluginsPolicyHandler::EnableNpapiPluginsPolicyHandler() {
+}
+
+EnableNpapiPluginsPolicyHandler::~EnableNpapiPluginsPolicyHandler() {
+}
+
+void EnableNpapiPluginsPolicyHandler::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 EnableNpapiPluginsPolicyHandler::CheckPolicySettings(
+    const PolicyMap& policies,
+    PolicyErrorMap* prefs) {
+  return true;
+}
+
+}  // namespace policy