[HBD] Add Plugins permission type and PermissionContext

chrome/browser/plugins/plugins_permission_context.cc

+// Copyright 2016 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/plugins_permission_context.h"
+
+PluginsPermissionContext::PluginsPermissionContext(Profile* profile)
+    : PermissionContextBase(profile,
+                            content::PermissionType::PLUGINS,
+                            CONTENT_SETTINGS_TYPE_PLUGINS) {}
+
+PluginsPermissionContext::~PluginsPermissionContext() {}
+
+bool PluginsPermissionContext::IsRestrictedToSecureOrigins() const {
+  return false;
+}