[Win10 sandbox mitigations] Four new Win10 mitigations added.

base/win/windows_version.h

Index: base/win/windows_version.h
diff --git a/base/win/windows_version.h b/base/win/windows_version.h
index c9bbd4f3eb7b536f66d2e72cde86e8d6b45f2db1..83904c0f771b2c890444b6a95bb1872cb0328015 100644
--- a/base/win/windows_version.h
+++ b/base/win/windows_version.h
@@ -24,13 +24,14 @@ namespace win {
 enum Version {
   VERSION_PRE_XP = 0,  // Not supported.
   VERSION_XP,
-  VERSION_SERVER_2003, // Also includes XP Pro x64 and Server 2003 R2.
-  VERSION_VISTA,       // Also includes Windows Server 2008.
-  VERSION_WIN7,        // Also includes Windows Server 2008 R2.
-  VERSION_WIN8,        // Also includes Windows Server 2012.
-  VERSION_WIN8_1,      // Also includes Windows Server 2012 R2.
-  VERSION_WIN10,       // Also includes Windows 10 Server.
-  VERSION_WIN_LAST,    // Indicates error condition.
+  VERSION_SERVER_2003,  // Also includes XP Pro x64 and Server 2003 R2.
+  VERSION_VISTA,        // Also includes Windows Server 2008.
+  VERSION_WIN7,         // Also includes Windows Server 2008 R2.
+  VERSION_WIN8,         // Also includes Windows Server 2012.
+  VERSION_WIN8_1,       // Also includes Windows Server 2012 R2.
+  VERSION_WIN10,        // Also includes Windows 10 Server.
+  VERSION_WIN10_10586,  // Version 1511, Threshold 2.

[jschuh, 2016/01/25 23:53:51]

This could be nicer. How about:

  VERSION_WIN10_TH2,  // Threshold 2: Version 1511, Build 10586.

[penny, 2016/01/26 22:37:09]

Done.  Sounds fine to me!

+  VERSION_WIN_LAST,     // Indicates error condition.
 };
 
 // A rough bucketing of the available types of versions of Windows. This is used