Reland: Add code to deal with serial device disconnection detection on Windows

device/core/device_info_query_win.h

+// 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.
+
+#ifndef DEVICE_CORE_DEVICE_INFO_QUERY_WIN_H_
+#define DEVICE_CORE_DEVICE_INFO_QUERY_WIN_H_
+
+#include <windows.h>
+#include <setupapi.h>
+
+#include "base/macros.h"
+
+namespace device {
+
+// Wrapper around a HDEVINFO and SP_DEVINFO_DATA that automatically destroys
+// them.
+class DeviceInfoQueryWin {
+ public:
+  DeviceInfoQueryWin()
+      : device_info_list_(SetupDiCreateDeviceInfoList(NULL, NULL)) {
+    if (device_info_list_ != INVALID_HANDLE_VALUE)
+      device_info_list_valid_ = true;
+    memset(&device_info_data_, 0, sizeof(device_info_data_));
+    device_info_data_.cbSize = sizeof(device_info_data_);
+  }
+
+  ~DeviceInfoQueryWin() {
+    if (device_info_list_valid_) {
+      if (device_info_data_valid_)
+        SetupDiDeleteDeviceInfo(device_info_list_, &device_info_data_);
+      SetupDiDestroyDeviceInfoList(device_info_list_);
+    }
+  }
+
+  bool AddDevice(const char* device_path) {
+    if (SetupDiOpenDeviceInterfaceA(device_info_list_, device_path, 0, NULL))
+      return true;
+    else
+      return false;
+  }
+
+  bool GetDeviceInfo() {
+    if (SetupDiEnumDeviceInfo(device_info_list_, 0, &device_info_data_))
+      device_info_data_valid_ = true;
+    return device_info_data_valid_;
+  }
+
+  bool device_info_list_valid() { return device_info_list_valid_; }
+
+  HDEVINFO device_info_list() { return device_info_list_; }
+
+  PSP_DEVINFO_DATA device_info_data() { return &device_info_data_; }
+
+ private:
+  HDEVINFO device_info_list_ = INVALID_HANDLE_VALUE;
+  SP_DEVINFO_DATA device_info_data_;
+  bool device_info_list_valid_ = false;
+  bool device_info_data_valid_ = false;
+
+  DISALLOW_COPY_AND_ASSIGN(DeviceInfoQueryWin);
+};
+
+}  // namespace device
+
+#endif  // DEVICE_CORE_DEVICE_INFO_QUERY_WIN_H_