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 <string>
+
+#include "base/macros.h"
+#include "device/core/device_core_export.h"
+
+namespace device {
+
+// Wraps HDEVINFO and SP_DEVINFO_DATA into a class that can automatically
+// release them. Provides interfaces that can add a device using its
+// device path, get device info and get device string property.
+class DEVICE_CORE_EXPORT DeviceInfoQueryWin {
+ public:
+  DeviceInfoQueryWin();
+  ~DeviceInfoQueryWin();
+
+  // Add a device to |device_info_list_| using its |device_path| so that
+  // its device info can be retrieved.
+  bool AddDevice(const char* device_path);
+  // Get the device info and store it into |device_info_data_|, this function
+  // should be called at most once.
+  bool GetDeviceInfo();
+  // Get device string property and store it into |property_buffer|.
+  bool GetDeviceStringProperty(DWORD property, std::string* property_buffer);
+
+  bool device_info_list_valid() {
+    return device_info_list_ != INVALID_HANDLE_VALUE;
+  }
+
+ private:
+  HDEVINFO device_info_list_ = INVALID_HANDLE_VALUE;
+  // When device_info_data_.cbSize != 0, |device_info_data_| is valid.
+  SP_DEVINFO_DATA device_info_data_;
+
+  DISALLOW_COPY_AND_ASSIGN(DeviceInfoQueryWin);
+};
+
+}  // namespace device
+
+#endif  // DEVICE_CORE_DEVICE_INFO_QUERY_WIN_H_