Fix None target type with Ninja build.

pylib/gyp/generator/ninja.py

Index: pylib/gyp/generator/ninja.py
diff --git a/pylib/gyp/generator/ninja.py b/pylib/gyp/generator/ninja.py
index 79245fdfe30f61121f4570db1613d7f376a7cc88..5aa04249d7cce0a3c78557ba32894b08a742d01d 100644
--- a/pylib/gyp/generator/ninja.py
+++ b/pylib/gyp/generator/ninja.py
@@ -483,7 +483,10 @@ class NinjaWriter:
     # Write out a link step, if needed.
     output = None
     is_empty_bundle = not link_deps and not mac_bundle_depends
-    if link_deps or self.target.actions_stamp or actions_depends:
+    if spec['type'] == 'none':
+      abs_sources = [self.GypPathToNinja(p) for p in sources]
+      self.ninja.build(spec['target_name'], 'phony', abs_sources)
+    elif link_deps or self.target.actions_stamp or actions_depends:
       output = self.WriteTarget(spec, config_name, config, link_deps,
                                 self.target.actions_stamp or actions_depends)
       if self.is_mac_bundle: