Add a policy_browsertest for the DefaultWebBluetoothGuardSetting.

content/common/bluetooth/bluetooth_messages.h

 // Copyright 2014 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.
 
 // Messages for Web Bluetooth API.
 // Multiply-included message file, hence no include guard.
 
 // Web Bluetooth Security
 // The security mechanisms of Bluetooth are described in the specification:
 // https://webbluetoothchrome.github.io/web-bluetooth
@@ skipping 69 matching lines @@
 
 #include "ipc/ipc_message_macros.h"
 
 #include <stdint.h>
 
 #include "content/common/bluetooth/bluetooth_device.h"
 #include "content/common/bluetooth/bluetooth_scan_filter.h"
 #include "third_party/WebKit/public/platform/modules/bluetooth/WebBluetoothError.h"
 
 #define IPC_MESSAGE_START BluetoothMsgStart
+#undef IPC_MESSAGE_EXPORT
+#define IPC_MESSAGE_EXPORT CONTENT_EXPORT
 
 IPC_ENUM_TRAITS_MAX_VALUE(
     device::BluetoothDevice::VendorIDSource,
     device::BluetoothDevice::VendorIDSource::VENDOR_ID_MAX_VALUE)
 
 IPC_STRUCT_TRAITS_BEGIN(content::BluetoothDevice)
   IPC_STRUCT_TRAITS_MEMBER(id)
   IPC_STRUCT_TRAITS_MEMBER(name)
   IPC_STRUCT_TRAITS_MEMBER(tx_power)
   IPC_STRUCT_TRAITS_MEMBER(rssi)
@@ skipping 186 matching lines @@
 IPC_MESSAGE_CONTROL3(BluetoothHostMsg_RegisterCharacteristic,
                      int /* thread_id */,
                      int /* frame_routing_id */,
                      std::string /* characteristics_instance_id */)
 
 // Unregister from characteristic value changed events.
 IPC_MESSAGE_CONTROL3(BluetoothHostMsg_UnregisterCharacteristic,
                      int /* thread_id */,
                      int /* frame_routing_id */,
                      std::string /* characteristics_instance_id */)