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

device/core/scoped_device_info_list.h

Index: device/core/scoped_device_info_list.h
diff --git a/device/core/scoped_device_info_list.h b/device/core/scoped_device_info_list.h
new file mode 100644
index 0000000000000000000000000000000000000000..5708e247b49ef8b5759f48ec55f174194dd2caaa
--- /dev/null
+++ b/device/core/scoped_device_info_list.h
@@ -0,0 +1,38 @@
+// 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_SCOPED_DEVICE_INFO_LIST_H_
+#define DEVICE_CORE_SCOPED_DEVICE_INFO_LIST_H_
+
+#include <windows.h>
+#include <setupapi.h>
+
+#include "base/win/scoped_handle.h"
+
+namespace base {

[grt (UTC plus 2), 2015/11/13 19:40:04]

this shouldn't be in base::win any longer.

[juncai, 2015/11/14 01:51:24]

Done.

+namespace win {
+
+// Traits for HDEVINFO that properly destroys it.
+struct DeviceInfoListTraits {
+  typedef HDEVINFO Handle;
+
+  static void CloseHandle(HDEVINFO handle) {
+    SetupDiDestroyDeviceInfoList(handle);
+  }
+
+  static bool IsHandleValid(HDEVINFO handle) {
+    return handle != INVALID_HANDLE_VALUE;
+  }
+
+  static HDEVINFO NullHandle() { return INVALID_HANDLE_VALUE; }
+};
+
+typedef base::win::GenericScopedHandle<DeviceInfoListTraits,

[grt (UTC plus 2), 2015/11/13 19:40:04]

i think base::ScopedGeneric is more appropriate than GenericScopedHandle since
you're not using the handler tracker.

[juncai, 2015/11/14 01:51:24]

Done.

+                                       base::win::DummyVerifierTraits>
+    ScopedDeviceInfoList;
+
+}  // namespace win
+}  // namespace base
+
+#endif  // DEVICE_CORE_SCOPED_DEVICE_INFO_LIST_H_