Mojo C++ bindings: switch device/serial mojom target to use STL types.

extensions/browser/api/serial/serial_api.cc

 // 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.
 
 #include "extensions/browser/api/serial/serial_api.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "base/values.h"
@@ skipping 470 matching lines @@
     extensions::api::serial::DeviceInfo,
     device::serial::DeviceInfoPtr>::Convert(const device::serial::DeviceInfoPtr&
                                                 device) {
   extensions::api::serial::DeviceInfo info;
   info.path = device->path;
   if (device->has_vendor_id)
     info.vendor_id.reset(new int(static_cast<int>(device->vendor_id)));
   if (device->has_product_id)
     info.product_id.reset(new int(static_cast<int>(device->product_id)));
   if (device->display_name)
-    info.display_name.reset(new std::string(device->display_name));
+    info.display_name.reset(new std::string(device->display_name.value()));
   return info;
 }
 
 }  // namespace mojo