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

test/win/gyptest-link-unsupported-manifest.py

+#!/usr/bin/env python
+
+# Copyright (c) 2013 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 error out if #pragma comments are used to modify manifests.
+"""
+
+import TestGyp
+
+import sys
+
+if sys.platform == 'win32':
+  # This assertion only applies to the ninja build.
+  test = TestGyp.TestGyp(formats=['ninja'])
+
+  CHDIR = 'linker-flags'
+  test.run_gyp('unsupported-manifest.gyp', chdir=CHDIR)
+
+  # Just needs to fail to build.
+  test.build('unsupported-manifest.gyp',
+      'test_unsupported', chdir=CHDIR, status=1)
+  test.must_not_exist(test.built_file_path('test_unsupported.exe', chdir=CHDIR))
+
+  test.pass_test()