[Win10 sandbox mitigations] Four new Win10 mitigations added.

base/win/windows_version.cc

 // 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 "base/win/windows_version.h"
 
 #include <windows.h>
 
 #include "base/logging.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 47 matching lines @@
       case 2:
         // Treat Windows Server 2012 the same as Windows 8.
         version_ = VERSION_WIN8;
         break;
       default:
         DCHECK_EQ(version_number_.minor, 3);
         version_ = VERSION_WIN8_1;
         break;
     }
   } else if (version_number_.major == 10) {
-    version_ = VERSION_WIN10;
+    if (version_number_.build < 10586) {
+      version_ = VERSION_WIN10;
+    } else {
+      version_ = VERSION_WIN10_TH2;
+    }
   } else if (version_number_.major > 6) {
     NOTREACHED();
     version_ = VERSION_WIN_LAST;
   }
   service_pack_.major = version_info.wServicePackMajor;
   service_pack_.minor = version_info.wServicePackMinor;
 
   SYSTEM_INFO system_info = {};
   ::GetNativeSystemInfo(&system_info);
   switch (system_info.wProcessorArchitecture) {
@@ skipping 90 matching lines @@
     return WOW64_UNKNOWN;
   return is_wow64 ? WOW64_ENABLED : WOW64_DISABLED;
 }
 
 Version GetVersion() {
   return OSInfo::GetInstance()->version();
 }
 
 }  // namespace win
 }  // namespace base