Changing icu to use gyp 'copies', rather than use a rules file....

icu.gyp

 # Copyright (c) 2011 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': {
     'use_system_icu%': 0,
     'icu_use_data_file_flag%': 0,
   },
   'conditions': [
@@ skipping 17 matching lines @@
           'source/common',
           'source/i18n',
         ],
         'msvs_disabled_warnings': [4005],
       },
       'targets': [
         {
           'target_name': 'icudata',
           'type': '<(library)',
           'sources': [
-            'windows/icudt46.dll',
              # These are hand-generated, but will do for now.  The linux
              # version is an identical copy of the (mac) icudt46l_dat.S file,
              # modulo removal of the .private_extern and .const directives and
              # with no leading underscore on the icudt46_dat symbol.
              # The ChromiumOS version is slightly smaller because it doesn't
              # have locale data for locales Chrome is localized to but ChromeOS
              # is not localized to.
              'linux/icudt46l_dat.S',
              'mac/icudt46l_dat.S',
              'cros/icudt46l_dat.S',
           ],
           'conditions': [
             [ 'OS == "win"', {
               'type': 'none',
-              'msvs_tool_files': ['../../build/output_dll_copy.rules'],

[jeanluc1, 2011/03/09 01:31:00]

Should we delete the output_dll_copy.rules file too?

-            }, {  # else: OS != "win"
-              'sources!': ['windows/icudt46.dll'],
+              'copies': [
+                {
+                  'destination': '<(PRODUCT_DIR)',
+                  'files': [
+                    'windows/icudt46.dll',
+                  ],
+                },
+              ],
             }],
             [ 'OS != "linux" or chromeos == 1', {
               'sources!': ['linux/icudt46l_dat.S'],
             }],
             [ 'OS != "mac"', {
               'sources!': ['mac/icudt46l_dat.S'],
             }],
             [ 'chromeos != 1', {
               'sources!': ['cros/icudt46l_dat.S'],
             }],
@@ skipping 473 matching lines @@
         {
           'target_name': 'icuuc',
           'type': 'none',
           'dependencies': ['system_icu'],
           'export_dependent_settings': ['system_icu'],
         },
       ],
     }],
   ],
 }