Refactor install.cc into the work item parts and the non-work item parts.

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 190 matching lines @@
             'include_dirs': [
               '<(SHARED_INTERMEDIATE_DIR)/setup',
             ],
           },
           'sources': [
             'installer/mini_installer/chrome.release',
             'installer/setup/chrome_frame_ready_mode.cc',
             'installer/setup/chrome_frame_ready_mode.h',
             'installer/setup/install.cc',
             'installer/setup/install.h',
+            'installer/setup/install_worker.cc',
+            'installer/setup/install_worker.h',
             'installer/setup/setup_main.cc',
             'installer/setup/setup.ico',
             'installer/setup/setup.rc',
             'installer/setup/setup_constants.cc',
             'installer/setup/setup_constants.h',
             'installer/setup/setup_exe_version.rc.version',
             'installer/setup/setup_resource.h',
             'installer/setup/setup_util.cc',
             'installer/setup/setup_util.h',
             'installer/setup/uninstall.cc',
@@ skipping 83 matching lines @@
         {
           'target_name': 'setup_unittests',
           'type': 'executable',
           'msvs_guid': 'C0AE4E06-F023-460F-BC14-6302CEAC51F8',
           'dependencies': [
             'installer_util',
             '<(DEPTH)/base/base.gyp:base',
             '<(DEPTH)/base/base.gyp:base_i18n',
             '<(DEPTH)/base/base.gyp:test_support_base',
             '<(DEPTH)/build/temp_gyp/googleurl.gyp:googleurl',
+            '<(DEPTH)/testing/gmock.gyp:gmock',
             '<(DEPTH)/testing/gtest.gyp:gtest',
           ],
           'include_dirs': [
             '<(DEPTH)',
           ],
+          # 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/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_util.cc',
             'installer/setup/setup_util_unittest.cc',
           ],
         },
       ],
     }],
     ['OS=="linux" and branding=="Chrome"', {
       'variables': {
         # Always google_chrome since this only applies to branding==Chrome.
         'branding_dir': 'app/theme/google_chrome',
@@ skipping 541 matching lines @@
       },
     }],
   ],
 }
 
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