Decouple IsMetroProcess() calls, introducing IsSingleWindowMetroMode().

win8/util/win8_util.cc

Index: win8/util/win8_util.cc
diff --git a/win8/util/win8_util.cc b/win8/util/win8_util.cc
new file mode 100644
index 0000000000000000000000000000000000000000..c22821504cbea554ae605e1bcbc56d761ed21aa1
--- /dev/null
+++ b/win8/util/win8_util.cc
@@ -0,0 +1,19 @@
+// 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.
+
+#include "win8/util/win8_util.h"
+
+#include "base/win/metro.h"
+
+namespace win8 {
+
+bool IsSingleWindowMetroMode() {
+#if defined(USE_ASH)
+  return false;
+#else
+  return base::win::IsMetroProcess();
+#endif
+}
+
+}  // namespace win8