Implement support for importing favorites from Edge on Windows 10.

chrome/common/importer/edge_importer_utils_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 CHROME_COMMON_IMPORTER_EDGE_IMPORTER_UTILS_WIN_H_
+#define CHROME_COMMON_IMPORTER_EDGE_IMPORTER_UTILS_WIN_H_
+
+#include "base/files/file_path.h"
+#include "base/strings/string16.h"
+
+namespace importer {
+
+// Returns the key to be used in HKCU to look for Edge's settings.
+// Overridable by tests via IEImporterTestRegistryOverrider.
+base::string16 GetEdgeSettingsKey();
+
+// Returns the data path for the Edge browser. Returns an empty path on error.
+base::FilePath GetEdgeDataFilePath();
+
+// Returns true if Edge favorites is currently in legacy (pre-Edge 13) mode.
+bool IsEdgeFavoritesLegacyMode();
+
+// Returns true if the Edge browser is installed and available for import.
+bool EdgeImporterCanImport();
+
+}  // namespace importer
+
+#endif  // CHROME_COMMON_IMPORTER_EDGE_IMPORTER_UTILS_WIN_H_