Rename tracing_untrusted->tracing_nacl

ppapi/ppapi_ipc_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': {
     'chromium_code': 1,
   },
   'includes': [
     '../native_client/build/untrusted.gypi',
@@ skipping 16 matching lines @@
           },
           'include_dirs': [
             '..',
           ],
           'dependencies': [
             '../native_client/tools.gyp:prep_toolchain',
             '../base/base_nacl.gyp:base_nacl',
             '../gpu/gpu_nacl.gyp:gpu_ipc_nacl',
             '../ipc/ipc_nacl.gyp:ipc_nacl',
             '../ppapi/ppapi_shared_nacl.gyp:ppapi_shared_nacl',
-            '../components/tracing_untrusted.gyp:tracing_untrusted',
+            '../components/tracing_nacl.gyp:tracing_nacl',
           ],
         },
       ],
     }],
   ],
 }