Copy more helper DLLs for cdb.exe.

chrome/chrome_tests.gypi

 # Copyright 2013 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': {
     'build_angle_deqp_tests%': 0,
     'chrome_browser_extensions_test_support_sources': [
       # A list of sources which is shared between different browser tests.
       'browser/apps/app_browsertest_util.cc',
       'browser/apps/app_browsertest_util.h',
@@ skipping 3419 matching lines @@
                 {
                   'action_name': 'copy_cdb',
                   'inputs': [
                     '<(DEPTH)/build/win/copy_cdb_to_output.py',
                   ],
                   'outputs': [
                     '<(PRODUCT_DIR)/cdb/cdb.exe',
                     '<(PRODUCT_DIR)/cdb/dbgeng.dll',
                     '<(PRODUCT_DIR)/cdb/dbghelp.dll',
                     '<(PRODUCT_DIR)/cdb/dbgmodel.dll',
+                    '<(PRODUCT_DIR)/cdb/winext/ext.dll',
+                    '<(PRODUCT_DIR)/cdb/winext/uext.dll',
+                    '<(PRODUCT_DIR)/cdb/winxp/exts.dll',
+                    '<(PRODUCT_DIR)/cdb/winxp/ntsdexts.dll',
                   ],
                   'action': ['python',
                              '<(DEPTH)/build/win/copy_cdb_to_output.py',
                              '<(PRODUCT_DIR)/cdb',
                              '<(target_arch)'],
                   'message': 'Copying cdb and deps to <(PRODUCT_DIR)/cdb',
                 },
               ],
             },
           ],
@@ skipping 135 matching lines @@
             'browser',
           ],
           'sources': [
             'tools/service_discovery_sniffer/service_discovery_sniffer.cc',
             'tools/service_discovery_sniffer/service_discovery_sniffer.h',
           ],
         }]
     }],
   ],  # 'conditions'
 }