Reland "msvs/ninja win: Fix support for ImageHasSafeExceptionHandlers"

pylib/gyp/win_tool.py

 #!/usr/bin/env python
 
 # Copyright (c) 2012 Google Inc. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Utility functions for Windows builds.
 
 These functions are executed via gyp-win-tool when using the ninja generator.
 """
@@ skipping 241 matching lines @@
     processing = set(os.path.basename(x)
                      for x in lines if x.startswith(prefixes))
     for line in lines:
       if not line.startswith(prefixes) and line not in processing:
         print line
     return popen.returncode
 
   def ExecAsmWrapper(self, arch, *args):
     """Filter logo banner from invocations of asm.exe."""
     env = self._GetEnv(arch)
-    # MSVS doesn't assemble x64 asm files.
-    if arch == 'environment.x64':
-      return 0
     popen = subprocess.Popen(args, shell=True, env=env,
                              stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
     out, _ = popen.communicate()
     for line in out.splitlines():
       if (not line.startswith('Copyright (C) Microsoft Corporation') and
           not line.startswith('Microsoft (R) Macro Assembler') and
           not line.startswith(' Assembling: ') and
           line):
         print line
     return popen.returncode
@@ skipping 31 matching lines @@
     project_dir = os.path.relpath(project_dir, BASE_DIR)
     selected_files = selected_files.split(';')
     ninja_targets = [os.path.join(project_dir, filename) + '^^'
         for filename in selected_files]
     cmd = ['ninja.exe']
     cmd.extend(ninja_targets)
     return subprocess.call(cmd, shell=True, cwd=BASE_DIR)
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv[1:]))