Avoid references to untrusted.gypi in WebKit

ppapi/ppapi.gyp

 # Copyright (c) 2010 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.
 
 # This is the "public" ppapi.gyp file, which must have dependencies on the
 # redistributable portions of PPAPI only. This prevents circular dependencies
 # in the .gyp files (since ppapi_internal depends on parts of Chrome).
 
 {
   'variables': {
@@ skipping 10 matching lines @@
         'cflags': ['-fPIC', '-fvisibility=hidden'],
 
         # This is needed to make the Linux shlib build happy. Without this,
         # -fvisibility=hidden gets stripped by the exclusion in common.gypi
         # that is triggered when a shared library build is specified.
         'cflags/': [['include', '^-fvisibility=hidden$']],
       }],
     ],
   },
   'includes': [
-    '../native_client/build/untrusted.gypi',
+    'ppapi_sources.gypi',
     'ppapi_cpp.gypi',
     'ppapi_gl.gypi',
   ],
 }