Add libc++ and libc++abi to third-party.

media/media_untrusted.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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'includes': [
     '../native_client/build/untrusted.gypi',
@@ skipping 20 matching lines @@
           ],
           'include_dirs': [
             '..',
           ],
           'includes': [
             'shared_memory_support.gypi',
           ],
           'sources': [
             '<@(shared_memory_support_sources)',
           ],
+          'conditions': [
+            ['use_libcxx==1', {
+              'dependencies!': [
+                '<(DEPTH)/third_party/libc++/libc++.gyp:libc++',
+                '<(DEPTH)/third_party/libc++abi/libc++abi.gyp:libc++abi',

[bradn, 2013/12/06 18:11:20]

I think it would be good to avoid requiring this in every untrusted target
(which are an unbounded set), if at all possible. I'm going to suggest an idea
for how in another location for context.

+              ],
+            }],
+          ],
         },
       ],
     }],
   ],
 }