Remove now-unnecessary dbghelp.dll suitable for XP

base/base.gyp

 # Copyright (c) 2012 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': [
     '../build/win_precompile.gypi',
@@ skipping 167 matching lines @@
                 'AdditionalDependencies': [
                   'cfgmgr32.lib',
                   'powrprof.lib',
                   'setupapi.lib',
                   'userenv.lib',
                   'winmm.lib',
                 ],
               },
             },
           },
-          'copies': [
-            {
-              'destination': '<(PRODUCT_DIR)/',
-              'files': [
-                '../build/win/dbghelp_xp/dbghelp.dll',
-              ],
-            },
-          ],
           'dependencies': [
            'trace_event/etw_manifest/etw_manifest.gyp:etw_manifest',
           ],
         }],
         ['OS == "mac" or (OS == "ios" and _toolset == "host")', {
           'link_settings': {
             'libraries': [
               '$(SDKROOT)/System/Library/Frameworks/AppKit.framework',
               '$(SDKROOT)/System/Library/Frameworks/ApplicationServices.framework',
               '$(SDKROOT)/System/Library/Frameworks/Carbon.framework',
@@ skipping 1518 matching lines @@
             '../build/isolate.gypi',
           ],
           'sources': [
             'base_unittests.isolate',
           ],
         },
       ],
     }],
   ],
 }