Use InstallDetails in setup.

chrome/installer/setup/setup_install_details.h

Index: chrome/installer/setup/setup_install_details.h
diff --git a/chrome/installer/setup/setup_install_details.h b/chrome/installer/setup/setup_install_details.h
new file mode 100644
index 0000000000000000000000000000000000000000..1545e8dcc6ab0966f10f8472fc87bc24474b770b
--- /dev/null
+++ b/chrome/installer/setup/setup_install_details.h
@@ -0,0 +1,34 @@
+// Copyright 2017 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.
+
+// Contains functions for determining the installer's InstallDetails at runtime.
+// See chrome/install_static/install_details.h for more information.
+
+#ifndef CHROME_INSTALLER_SETUP_SETUP_INSTALL_DETAILS_H_
+#define CHROME_INSTALLER_SETUP_SETUP_INSTALL_DETAILS_H_
+
+#include <memory>
+
+namespace base {
+class CommandLine;
+}
+namespace install_static {
+class PrimaryInstallDetails;
+}
+namespace installer {
+class MasterPreferences;
+}
+
+// Creates a PrimaryInstallDetails instance for the installer and makes it the
+// global InstallDetails for the process.
+void InitializeInstallDetails(
+    const base::CommandLine& command_line,
+    const installer::MasterPreferences& master_preferences);
+
+// Returns a PrimaryInstallDetails instance for the installer.
+std::unique_ptr<install_static::PrimaryInstallDetails> MakeInstallDetails(
+    const base::CommandLine& command_line,
+    const installer::MasterPreferences& master_preferences);
+
+#endif  // CHROME_INSTALLER_SETUP_SETUP_INSTALL_DETAILS_H_