Remove base/win/metro.{cc|h} and some associated code

chrome/chrome.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,
 
     # Define the common dependencies that contain all the actual
     # Chromium functionality.  This list gets pulled in below by
     # the link of the actual chrome (or chromium) executable on
@@ skipping 444 matching lines @@
             'common/safe_browsing/binary_feature_extractor_win.cc',
             'common/safe_browsing/pe_image_reader_win.cc',
             'common/safe_browsing/pe_image_reader_win.h',
             'tools/safe_browsing/sb_sigutil.cc',
           ],
         },
       ],  # 'targets'
       'includes': [
         'chrome_watcher/chrome_watcher.gypi',
         'chrome_process_finder.gypi',
-        'metro_utils.gypi',
       ],
     }],  # OS=="win"
     ['OS=="win" and target_arch=="ia32"',
       { 'targets': [
         {
           'target_name': 'chrome_user32_delay_imports',
           'type': 'none',
           'variables': {
             'lib_dir': '<(INTERMEDIATE_DIR)',
           },
@@ skipping 292 matching lines @@
                 'service/service_utility_process_host.cc',
                 'service/service_utility_process_host.h',
               ],
             }],
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }