GTTF: Add a basic new unit test launcher.

third_party/zlib/google/zip.gyp

 # Copyright 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'targets': [
     {
-      'target_name': 'metro_utils',
+      'target_name': 'zip',
       'type': 'static_library',
       'dependencies': [
-        'installer_util',
-        '../base/base.gyp:base',
+        '../zlib.gyp:minizip',
+        '../../../base/base.gyp:base',
       ],
       'include_dirs': [
-        '..',
+        '../../..',
       ],
       'sources': [
-        'browser/metro_utils/metro_chrome_win.cc',
-        'browser/metro_utils/metro_chrome_win.h',
+        'zip.cc',
+        'zip.h',
+        'zip_internal.cc',
+        'zip_internal.h',
+        'zip_reader.cc',
+        'zip_reader.h',
       ],
     },
   ],
 }