Miscellaneous fixes for system libraries files:

build/linux/unbundle/zlib.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': 'zlib',
       'type': 'none',
       'variables': {
@@ skipping 25 matching lines @@
         ],
       },
       'defines': [
         'USE_SYSTEM_MINIZIP',
       ],
       'link_settings': {
         'libraries': [
           '-lminizip',
         ],
       },
-    }
+    },
+    {
+      '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',
+      ],
+    },
   ],
 }