NaCl/GYP: remove references to prep_toolchain.

third_party/libjingle/libjingle_nacl.gyp

 # Copyright 2014 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': {
     'libjingle_source': "source",
     'webrtc_base': "../webrtc/base",
     'webrtc_xmllite': "../webrtc/libjingle/xmllite",
     'webrtc_p2p': "../webrtc/p2p",
   },
   'includes': [
     '../../native_client/build/untrusted.gypi',
   ],
   'targets': [
     {
       'target_name': 'libjingle_nacl',
       'type': 'none',
       'variables': {
         'nlib_target': 'libjingle_nacl.a',
         'nacl_untrusted_build': 1,
         'build_glibc': 0,
         'build_newlib': 0,
         'build_pnacl_newlib': 1,
         'use_openssl': 1,
       },
       'dependencies': [
-        '<(DEPTH)/native_client/tools.gyp:prep_toolchain',
         '<(DEPTH)/native_client_sdk/native_client_sdk_untrusted.gyp:nacl_io_untrusted',
         '<(DEPTH)/third_party/expat/expat_nacl.gyp:expat_nacl',
         '<(DEPTH)/third_party/boringssl/boringssl_nacl.gyp:boringssl_nacl',
         'libjingle_p2p_constants_nacl',
       ],
       'defines': [
         'EXPAT_RELATIVE_PATH',
         'FEATURE_ENABLE_SSL',
         'GTEST_RELATIVE_PATH',
         'HAVE_OPENSSL_SSL_H',
@@ skipping 282 matching lines @@
         './<(libjingle_source)',
         '../'
       ],
       'sources': [
         '<(webrtc_p2p)/base/constants.cc',
         '<(webrtc_p2p)/base/constants.h',
       ],
     },  # end of target 'libjingle_p2p_constants_nacl'
   ],
 }