Speculative fix for crash in DOMUIThumbnailSource.

base/base.gypi

 # 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.
 
 {
   'target_defaults': {
     'variables': {
       'base_target': 0,
       'base_extra_target': 0,
     },
@@ skipping 158 matching lines @@
           'process_win.cc',
           'profiler.cc',
           'profiler.h',
           'rand_util.cc',
           'rand_util.h',
           'rand_util_posix.cc',
           'rand_util_win.cc',
           'raw_scoped_refptr_mismatch_checker.h',
           'ref_counted.cc',
           'ref_counted.h',
+          'ref_counted_memory.cc',
           'ref_counted_memory.h',
           'registry.cc',
           'registry.h',
           'resource_util.cc',
           'resource_util.h',
           'safe_strerror_posix.cc',
           'safe_strerror_posix.h',
           'scoped_bstr_win.cc',
           'scoped_bstr_win.h',
           'scoped_cftyperef.h',
@@ skipping 549 matching lines @@
             'third_party/xdg_mime/xdgmimemagic.c',
             'third_party/xdg_mime/xdgmimemagic.h',
             'third_party/xdg_mime/xdgmimeparent.c',
             'third_party/xdg_mime/xdgmimeparent.h',
           ],
         },
       ],
     }],
   ],
 }