GTTF: Add a basic new unit test launcher.

third_party/zlib/zlib.gyp

 # Copyright (c) 2012 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': 'zlib',
       'type': 'static_library',
       'sources': [
@@ skipping 89 matching lines @@
               # zlib uses `if ((a == b))` for some reason.
               '-Wno-parentheses-equality',
             ],
           },
           'cflags': [
             '-Wno-parentheses-equality',
           ],
         }],
       ],
     },
-    {
-      'target_name': 'zip',
-      'type': 'static_library',
-      'dependencies': [
-        'minizip',
-        '../../base/base.gyp:base',
-      ],
-      'include_dirs': [
-        '../..',
-      ],
-      'sources': [
-        'google/zip.cc',
-        'google/zip.h',
-        'google/zip_internal.cc',
-        'google/zip_internal.h',
-        'google/zip_reader.cc',
-        'google/zip_reader.h',
-      ],
-    },
   ],
 }