Generate ChromeVersionConstants.java at build time.

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 566 matching lines @@
       {
       'targets': [
         {
           'target_name': 'chrome_java',
           'type': 'none',
           'dependencies': [
             'activity_type_ids_java',
             'app_banner_metrics_ids_java',
             'chrome_resources.gyp:chrome_strings',
             'chrome_strings_grd',
+            'chrome_version_java',
             'profile_account_management_metrics_java',
             'profile_sync_service_model_type_selection_java',
             'resource_id_java',
             'toolbar_model_security_levels_java',
             'tab_load_status_java',
             '../base/base.gyp:base',
             '../components/components.gyp:bookmarks_java',
             '../components/components.gyp:dom_distiller_core_java',
             '../components/components.gyp:gcm_driver_java',
             '../components/components.gyp:invalidation_java',
@@ skipping 129 matching lines @@
                 'service/service_utility_process_host.cc',
                 'service/service_utility_process_host.h',
               ],
             }],
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }