win: Add NoImportLibrary flag for ninja generator

test/win/gyptest-link-noimportlib.py

Index: test/win/gyptest-link-noimportlib.py
diff --git a/test/win/gyptest-link-noimportlib.py b/test/win/gyptest-link-noimportlib.py
new file mode 100644
index 0000000000000000000000000000000000000000..d12e0ad3ed324607bdc2929dc9cfe0bc45f501ee
--- /dev/null
+++ b/test/win/gyptest-link-noimportlib.py
@@ -0,0 +1,30 @@
+#!/usr/bin/env python
+
+# Copyright (c) 2015 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 that the (custom) NoImportLibrary flag is handled correctly.
+"""
+
+import TestGyp
+
+import os
+import sys
+
+if sys.platform == 'win32':
+  test = TestGyp.TestGyp(formats=['ninja'])
+
+  CHDIR = 'importlib'
+  test.run_gyp('noimplib.gyp', chdir=CHDIR)
+  test.build('noimplib.gyp', test.ALL, chdir=CHDIR)
+
+  # The target has an entry point, but no exports. Ordinarily, ninja expects
+  # all DLLs to export some symbols (with the exception of /NOENTRY resource-
+  # only DLLs). When the NoImportLibrary flag is set, this is suppressed. If
+  # this is not working correctly, the expected .lib will never be generated
+  # but will be expected, so the build will not be up to date.
+  test.up_to_date('noimplib.gyp', test.ALL, chdir=CHDIR)
+
+  test.pass_test()