Add ShellIntegration::ActivateMetroChrome, which launches Chrome in metro-mode on Windows 8.

base/win/metro_exports.h

Index: base/win/metro_exports.h
diff --git a/base/win/metro_exports.h b/base/win/metro_exports.h
new file mode 100644
index 0000000000000000000000000000000000000000..e29abf426dba6ce027ee4dcbe09b102cf239cf0a
--- /dev/null
+++ b/base/win/metro_exports.h
@@ -0,0 +1,26 @@
+// Copyright (c) 2012 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.
+
+// This file declares the types and names of functions exported from
+// metro_driver.dll.
+
+#ifndef BASE_WIN_METRO_EXPORTS_H_
+#define BASE_WIN_METRO_EXPORTS_H_
+#pragma once
+
+#include "base/base_export.h"
+
+#include <windows.h>
+
+namespace metro_exports {

[brettw, 2012/05/31 19:32:08]

This should be in the base::win namespace. I'd remove this metro_exports one. I
think there's little enough in this namespace that your names are sufficiently
unique, especially since this is an API function.

[grt (UTC plus 2), 2012/06/01 02:45:44]

Done.

+
+// The types of exports in metro_driver.dll.
+typedef HRESULT (*ActivateApplicationFn)(const wchar_t*);
+
+// The names of exports in metro_driver.dll.
+BASE_EXPORT extern const char kActivateApplication[];
+
+}  // namespace metro_exports
+
+#endif  // BASE_WIN_METRO_EXPORTS_H_