Add enterprise policy to turn off Bluetooth.

chrome/browser/bluetooth/bluetooth_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/bluetooth/bluetooth_permission_context.h"
+
+BluetoothPermissionContext::BluetoothPermissionContext(Profile* profile)
+    : PermissionContextBase(profile,
+                            content::PermissionType::BLUETOOTH_GUARD,
+                            CONTENT_SETTINGS_TYPE_BLUETOOTH_GUARD) {}
+
+BluetoothPermissionContext::~BluetoothPermissionContext() {}
+
+bool BluetoothPermissionContext::IsRestrictedToSecureOrigins() const {
+  return true;
+}