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

pylib/gyp/win_tool.py

Index: pylib/gyp/win_tool.py
diff --git a/pylib/gyp/win_tool.py b/pylib/gyp/win_tool.py
index 417e465f7853f4690bdda25bb1c501c230b68697..bb6f1ea436f258aabdfa4843eee4ef301883c0ff 100755
--- a/pylib/gyp/win_tool.py
+++ b/pylib/gyp/win_tool.py
@@ -123,7 +123,9 @@ class WinTool(object):
                             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