Try 2: Completely redo how themes are stored on disk and processed at install time.

chrome/chrome_tests.gypi

 # Copyright (c) 2009 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' : {
     'browser_tests_sources_views_specific': [
       'browser/views/find_bar_host_browsertest.cc',
     ],
     'browser_tests_sources_win_specific': [
@@ skipping 508 matching lines @@
         'browser/bookmarks/bookmark_drag_data_unittest.cc',
         'browser/bookmarks/bookmark_folder_tree_model_unittest.cc',
         'browser/bookmarks/bookmark_html_writer_unittest.cc',
         'browser/bookmarks/bookmark_index_unittest.cc',
         'browser/bookmarks/bookmark_model_test_utils.cc',
         'browser/bookmarks/bookmark_model_test_utils.h',
         'browser/bookmarks/bookmark_model_unittest.cc',
         'browser/bookmarks/bookmark_table_model_unittest.cc',
         'browser/bookmarks/bookmark_utils_unittest.cc',
         'browser/browser_commands_unittest.cc',
+        'browser/browser_theme_pack_unittest.cc',
         'browser/browser_theme_provider_unittest.cc',
         'browser/browser_unittest.cc',
         'browser/chrome_browser_application_mac_unittest.mm',
         'browser/debugger/devtools_remote_message_unittest.cc',
         'browser/debugger/devtools_remote_listen_socket_unittest.cc',
         'browser/debugger/devtools_remote_listen_socket_unittest.h',
         'browser/diagnostics/diagnostics_model_unittest.cc',
         'browser/child_process_security_policy_unittest.cc',
         'browser/chrome_thread_unittest.cc',
         'browser/chromeos/external_cookie_handler_unittest.cc',
@@ skipping 1253 matching lines @@
       ]
     }],  # 'coverage!=0'
   ],  # 'conditions'
 }
 
 # Local Variables:
 # tab-width:2
 # indent-tabs-mode:nil
 # End:
 # vim: set expandtab tabstop=2 shiftwidth=2: