linux: split libxpcom_hack into its own file

webkit/webkit.gyp

 # Copyright (c) 2009 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': {
     'feature_defines': [
       'ENABLE_CHANNEL_MESSAGING=1',
       'ENABLE_DATABASE=1',
       'ENABLE_DATAGRID=0',
@@ skipping 1607 matching lines @@
           'sources': [
             'tools/libxul_hack/libxul_hack.cc'
           ],
         },
         {
           # We want to build exactly "libxpcom.so".
           'target_name': 'xpcom',
           'product_dir': '<(PRODUCT_DIR)',
           'type': 'loadable_module',
           'sources': [
-            'tools/libxul_hack/libxul_hack.cc'
+            'tools/libxul_hack/libxpcom_hack.cc'
           ],
         },
       ], # targets
     }],
   ], # conditions
 }