[build] New VS 2013 toolchain with setenv.*.json

build/vs_toolchain.py

 #!/usr/bin/env python
 # Copyright 2015 the V8 project authors. All rights reserved.
 # Copyright 2014 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 glob
 import json
 import os
 import pipes
@@ skipping 265 matching lines @@
     _CopyRuntime(target_dir, runtime_dir, target_cpu, debug=True)
 
 
 def _GetDesiredVsToolchainHashes():
   """Load a list of SHA1s corresponding to the toolchains that we want installed
   to build with."""
   if GetVisualStudioVersion() == '2015':
     # Update 2.
     return ['95ddda401ec5678f15eeed01d2bee08fcbc5ee97']
   else:
-    return ['4087e065abebdca6dbd0caca2910c6718d2ec67f']
+    return ['03a4e939cd325d6bc5216af41b92d02dda1366a6']
 
 
 def ShouldUpdateToolchain():
   """Check if the toolchain should be upgraded."""
   if not os.path.exists(json_data_file):
     return True
   with open(json_data_file, 'r') as tempf:
     toolchain_data = json.load(tempf)
   version = toolchain_data['version']
   env_version = GetVisualStudioVersion()
@@ skipping 73 matching lines @@
       'copy_dlls': CopyDlls,
   }
   if len(sys.argv) < 2 or sys.argv[1] not in commands:
     print >>sys.stderr, 'Expected one of: %s' % ', '.join(commands)
     return 1
   return commands[sys.argv[1]](*sys.argv[2:])
 
 
 if __name__ == '__main__':
   sys.exit(main())