Share the zygote's fopen overrides with nacl_helper.

content/content_browser.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.
 
 {
   'dependencies': [
     'browser/debugger/devtools_resources.gyp:devtools_resources',
     'browser/speech/proto/speech_proto.gyp:speech_proto',
     '../base/base.gyp:base_static',
     '../crypto/crypto.gyp:crypto',
@@ skipping 749 matching lines @@
     'browser/worker_host/worker_document_set.cc',
     'browser/worker_host/worker_document_set.h',
     'browser/worker_host/worker_message_filter.cc',
     'browser/worker_host/worker_message_filter.h',
     'browser/worker_host/worker_process_host.cc',
     'browser/worker_host/worker_process_host.h',
     'browser/worker_host/worker_service_impl.cc',
     'browser/worker_host/worker_service_impl.h',
     'browser/zygote_host_impl_linux.cc',
     'browser/zygote_host_impl_linux.h',
+    'zygote/zygote_libc_override_linux.cc',
+    'zygote/zygote_libc_override_linux.h',
     'zygote/zygote_linux.cc',
     'zygote/zygote_linux.h',
     'zygote/zygote_main_linux.cc',
     '<(SHARED_INTERMEDIATE_DIR)/webkit/grit/devtools_resources.h',
     '<(SHARED_INTERMEDIATE_DIR)/webkit/grit/devtools_resources_map.cc',
     '<(SHARED_INTERMEDIATE_DIR)/webkit/grit/devtools_resources_map.h',
   ],
   'conditions': [
     ['OS!="win" and OS!="mac" and OS!="linux"', {
       'sources': [
@@ skipping 199 matching lines @@
       ],
     }],
     ['input_speech==0', {
       'sources/': [
         ['exclude', '^browser/speech/'],
       ],
     }],
   ],
 }