ninja win: Suppress noisy messages from link.exe when LTCG is enabled

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 105 matching lines @@
     env = self._GetEnv(arch)
     if use_separate_mspdbsrv == 'True':
       self._UseSeparateMspdbsrv(env, args)
     link = subprocess.Popen([args[0].replace('/', '\\')] + list(args[1:]),
                             shell=True,
                             env=env,
                             stdout=subprocess.PIPE,
                             stderr=subprocess.STDOUT)
     out, _ = link.communicate()
     for line in out.splitlines():
-      if not line.startswith('   Creating library '):
+      if (not line.startswith('   Creating library ') and
+          not line.startswith('Generating code') and
+          not line.startswith('Finished generating code')):
         print line
     return link.returncode
 
   def ExecLinkWithManifests(self, arch, embed_manifest, out, ldcmd, resname,
                             mt, rc, intermediate_manifest, *manifests):
     """A wrapper for handling creating a manifest resource and then executing
     a link command."""
     # The 'normal' way to do manifests is to have link generate a manifest
     # based on gathering dependencies from the object files, then merge that
     # manifest with other manifests supplied as sources, convert the merged
@@ skipping 166 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:]))