win_toolchain: Update packaging script to package win10 sdk

win_toolchain/get_toolchain_if_necessary.py

Index: win_toolchain/get_toolchain_if_necessary.py
diff --git a/win_toolchain/get_toolchain_if_necessary.py b/win_toolchain/get_toolchain_if_necessary.py
index c38785d1732e1eef7c8ff65f4095b545730effe2..b5ffd4df55aabe29b07ea899138f89d55787156a 100755
--- a/win_toolchain/get_toolchain_if_necessary.py
+++ b/win_toolchain/get_toolchain_if_necessary.py
@@ -203,13 +203,14 @@ def DoTreeMirror(target_dir, tree_sha1):
   """In order to save temporary space on bots that do not have enough space to
   download ISOs, unpack them, and copy to the target location, the whole tree
   is uploaded as a zip to internal storage, and then mirrored here."""
-  temp_dir, local_zip = DownloadUsingGsutil(tree_sha1 + '.zip')
+  #temp_dir, local_zip = DownloadUsingGsutil(tree_sha1 + '.zip')
+  local_zip = tree_sha1 + '.zip'
   sys.stdout.write('Extracting %s...\n' % local_zip)
   sys.stdout.flush()
   with zipfile.ZipFile(local_zip, 'r', zipfile.ZIP_DEFLATED, True) as zf:
     zf.extractall(target_dir)
-  if temp_dir:
-    RmDir(temp_dir)
+  #if temp_dir:
+    #RmDir(temp_dir)
 
 
 def main():