Switch out the setup api for using the cabinet API directly....

chrome/chrome_installer.gypi

 # 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': {
     'lastchange_path': '<(SHARED_INTERMEDIATE_DIR)/build/LASTCHANGE',
     # 'branding_dir' is set in the 'conditions' section at the bottom.
   },
   'conditions': [
@@ skipping 323 matching lines @@
             '<(DEPTH)/testing/gtest.gyp:gtest',
           ],
           'include_dirs': [
             '<(DEPTH)',
             '<(INTERMEDIATE_DIR)',
           ],
           # TODO(robertshield): Move the items marked with "Move to lib"
           # below into a separate lib and then link both setup.exe and
           # setup_unittests.exe against that.
           'sources': [
+            'installer/mini_installer/decompress.cc',
+            'installer/mini_installer/decompress.h',
+            'installer/mini_installer/decompress_test.cc',
             'installer/mini_installer/mini_string.cc',
             'installer/mini_installer/mini_string.h',
             'installer/mini_installer/mini_string_test.cc',
             'installer/setup/install_worker.cc',    # Move to lib
             'installer/setup/install_worker.h',     # Move to lib
             'installer/setup/install_worker_unittest.cc',
             'installer/setup/run_all_unittests.cc',
             'installer/setup/setup_constants.cc',   # Move to lib
             'installer/setup/setup_constants.h',    # Move to lib
             'installer/setup/setup_unittests.rc',
@@ skipping 553 matching lines @@
       },
     }],
   ],
 }
 
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