[VS Addin] Bump SDK version required for pnacl builds.

visual_studio/NativeClientVSAddIn/NaCl.Build.CPPTasks/SDKUtilities.cs

 // 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.
 
 namespace NaCl.Build.CPPTasks
 {
     using System;
     using System.IO;
     using System.Collections.Generic;
 
     /// <summary>
     /// TODO: Update summary.
     /// </summary>
     public class SDKUtilities
     {
         // The first version of pepper with a known working PNaCl toolchain
-        public const int MinPNaCLSDKVersion = 24;
-        public const int MinPNaCLSDKRevision = 166868;
+        public const int MinPNaCLSDKVersion = 25;
+        public const int MinPNaCLSDKRevision = 168269;
 
         /// <summary>
         /// Find python executable in user's PATH.
         /// </summary>
         public static bool FindPython()
         {
             string envvar = Environment.GetEnvironmentVariable("Path", EnvironmentVariableTarget.Process);
             List<string> pathList = new List<string>(envvar.Split(';'));
             foreach (string path in pathList)
             {
@@ skipping 58 matching lines @@
             int sdkRevision;
             int sdkVersion = GetSDKVersion(root, out sdkRevision);
             if (sdkVersion > version)
                 return true;
             if (sdkVersion == version && sdkRevision >= revision)
                 return true;
             return false;
         }
     }
 }