mac: Remove memory/scoped_nsobject.h forwarding header.

base/base.gypi

 # 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.
 
 {
   'target_defaults': {
     'variables': {
       'base_target': 0,
     },
     'target_conditions': [
@@ skipping 270 matching lines @@
           'memory/manual_constructor.h',
           'memory/memory_pressure_listener.cc',
           'memory/memory_pressure_listener.h',
           'memory/raw_scoped_refptr_mismatch_checker.h',
           'memory/ref_counted.cc',
           'memory/ref_counted.h',
           'memory/ref_counted_delete_on_message_loop.h',
           'memory/ref_counted_memory.cc',
           'memory/ref_counted_memory.h',
           'memory/scoped_handle.h',
-          'memory/scoped_nsobject.h',
           'memory/scoped_open_process.h',
           'memory/scoped_policy.h',
           'memory/scoped_ptr.h',
           'memory/scoped_vector.h',
           'memory/shared_memory.h',
           'memory/shared_memory_android.cc',
           'memory/shared_memory_nacl.cc',
           'memory/shared_memory_posix.cc',
           'memory/shared_memory_win.cc',
           'memory/singleton.cc',
@@ skipping 551 matching lines @@
           ['<(use_system_nspr)==1 and >(nacl_untrusted_build)==0', {
             'sources/': [
               ['exclude', '^third_party/nspr/'],
             ],
           }],
         ],
       }],
     ],
   },
 }