ninja windows: support precompiled headers

test/win/precompiled/gyptest-all.py

+#!/usr/bin/env python
+
+# Copyright (c) 2011 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.
+
+"""
+Verifies that precompiled headers can be specified.
+"""
+
+import TestGyp
+
+import sys
+
+if sys.platform == 'win32':
+    test = TestGyp.TestGyp(formats=['msvs', 'ninja'], workdir='workarea_all')
+    test.run_gyp('hello.gyp')
+    test.build('hello.gyp', 'hello')
+    test.run_built_executable('hello', stdout="Hello, world!\nHello, two!\n")
+    test.up_to_date('hello.gyp', test.ALL)
+    test.pass_test()