Make ninja build on mac work

runtime/bin/net/ssl.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.
 
 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 # This file is a modified copy of Chromium's src/net/third_party/nss/ssl.gyp.
 # Revision 169195 (this should agree with "nss_rev" in DEPS).
@@ skipping 141 matching lines @@
         # Dart: Conditions sections for ssl/bodge removed.
         #       [ 'os_posix == 1 and OS != "mac" and OS != "ios", {
         #         ...
         #       ],
         #       [ 'OS == "mac" or OS == "ios" or OS == "win"', {
         #         ...
         #       ],
       ],
       'configurations': {
         'Debug_Base': {
+          'inherit_from': ['Dart_Base'],

[Bill Hesse, 2013/04/29 11:17:54]

Please comment this as a modification from the base file, Chromium's
src/net/third_party/nss/ssl.gyp.

If Dart_Base has any -wall or -werror flags, this may be a problem.  It was very
hard to override the -wall flags for other NSS gyp files, and separate flag
secrions in Debug and Release sections, rather than Base, were needed.

[kustermann, 2013/04/30 10:37:22]

I added comment at the top of the file.

We'll see soon if the '-Werror' flag turns out to be a problem. In
'tools/gyp/configurations_make.gypi' it is included in 'Dart_Base'.

           'defines': [
             'DEBUG',
           ],
         },
       },
     },
   ],
   }]],
 }