Revert of xp: copy dbghelp.dll to output dir and have base.isolate use it there

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 755 matching lines @@
           'sources!': [
             'file_descriptor_shuffle_unittest.cc',
             'files/dir_reader_posix_unittest.cc',
             'message_loop/message_pump_libevent_unittest.cc',
             'threading/worker_pool_posix_unittest.cc',
           ],
           # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
           'msvs_disabled_warnings': [
             4267,
           ],
-          'copies': [
-            {
-              'destination': '<(PRODUCT_DIR)/',
-              'files': [
-                '../build/win/dbghelp_xp/dbghelp.dll',
-              ],
-            },
-          ],
           'conditions': [
             # This is needed so base_unittests uses the allocator shim, as
             # SecurityTest.MemoryAllocationRestriction* tests are dependent
             # on tcmalloc.
             # TODO(wfh): crbug.com/246278 Move tcmalloc specific tests into
             # their own test suite.
             ['win_use_allocator_shim==1', {
               'dependencies': [
                 'allocator/allocator.gyp:allocator',
               ],
@@ skipping 773 matching lines @@
               'dependencies': [
                 '../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
               ],
             }],
           ],
         },
       ],
     }],
   ],
 }