Revert "Revert "Reland 2: mac: Use a placeholder string for the family name of the system font." Br…

Source/platform/mac/VersionUtilMac.mm

Index: Source/platform/mac/VersionUtilMac.mm
diff --git a/Source/platform/mac/VersionUtilMac.mm b/Source/platform/mac/VersionUtilMac.mm
new file mode 100644
index 0000000000000000000000000000000000000000..29e22f995fbad849512194e6dae6a454c6b8e8e5
--- /dev/null
+++ b/Source/platform/mac/VersionUtilMac.mm
@@ -0,0 +1,26 @@
+// 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.
+
+#import "config.h"
+#import "platform/mac/VersionUtilMac.h"
+
+#import <AppKit/AppKit.h>
+
+#ifndef NSAppKitVersionNumber10_9
+#define NSAppKitVersionNumber10_9 1265
+#endif
+
+namespace blink {
+
+bool IsOSMavericksOrEarlier()
+{
+    return floor(NSAppKitVersionNumber) <= NSAppKitVersionNumber10_9;
+}
+
+bool IsOSMavericks()
+{
+    return floor(NSAppKitVersionNumber) == NSAppKitVersionNumber10_9;
+}
+
+} // namespace blink