win ninja: Refactor manifest generate and embed to be 1-pass

test/win/gyptest-link-generate-manifest.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.
 
 """
 Make sure we generate a manifest file when linking binaries, including
 handling AdditionalManifestFiles.
 """
@@ skipping 34 matching lines @@
           return None
         else:
           raise
 
   test = TestGyp.TestGyp(formats=['msvs', 'ninja'])
 
   CHDIR = 'linker-flags'
   test.run_gyp('generate-manifest.gyp', chdir=CHDIR)
   test.build('generate-manifest.gyp', test.ALL, chdir=CHDIR)
 
+  # Make sure that generation of .generated.manifest does not cause a relink.
+  test.run_gyp('generate-manifest.gyp', chdir=CHDIR)
+  test.up_to_date('generate-manifest.gyp', test.ALL, chdir=CHDIR)
+
   def test_manifest(filename, generate_manifest, embedded_manifest,
                     extra_manifest):
     exe_file = test.built_file_path(filename, chdir=CHDIR)
     if not generate_manifest:
       test.must_not_exist(exe_file + '.manifest')
       manifest = extract_manifest(exe_file, 1)
       test.fail_test(manifest)
       return
     if embedded_manifest:
       manifest = extract_manifest(exe_file, 1)
@@ skipping 45 matching lines @@
                 extra_manifest=True)
   test_manifest('test_generate_manifest_true_with_extra_manifest_list.exe',
                 generate_manifest=True,
                 embedded_manifest=False,
                 extra_manifest=True)
   test_manifest('test_generate_manifest_false_with_extra_manifest_list.exe',
                 generate_manifest=False,
                 embedded_manifest=False,
                 extra_manifest=True)
   test.pass_test()