Switching chrome.sln to gyp generated version....

chrome/installer/installer.gyp

 {
   'variables': {
     'version_py': '../../chrome/tools/build/version.py',
     'VERSION': '../../chrome/VERSION',
     # 'BRANDING' is set in the 'conditions' section at the bottom.
   },
   'includes': [
     '../../build/common.gypi',
   ],
   'targets': [
@@ skipping 88 matching lines @@
                              '<(BRANDING)', '-f', '<(VERSION)',
                              '-o', '<@(_outputs)'],
                 },
               ],
             }],
           ],
         }],
         ['OS=="win"', {
           'type': '<(library)',
           'msvs_guid': 'EFBB1436-A63F-4CD8-9E99-B89226E782EC',
+          'msvs_existing_vcproj': 'util/util.vcproj',
           'dependencies': [
             'installer_util_strings',
             '../chrome.gyp:common',
             '../chrome.gyp:chrome_resources',
             '../chrome.gyp:chrome_strings',
             '../../net/net.gyp:net_resources',
             '../../media/media.gyp:media',
             '../../skia/skia.gyp:skia',
             '../../third_party/icu38/icu38.gyp:icui18n',
             '../../third_party/icu38/icu38.gyp:icuuc',
@@ skipping 61 matching lines @@
       ],
     },
   ],
   'conditions': [
     ['OS=="win"', {
       'targets': [
         {
           'target_name': 'gcapi_dll',
           'type': 'loadable_module',
           'msvs_guid': 'B802A2FE-E4E2-4F5A-905A-D5128875C954',
+          'msvs_existing_vcproj': 'gcapi/gcapi_dll.vcproj',
           'dependencies': [
             '../../google_update/google_update.gyp:google_update',
           ],
           'include_dirs': [
             '../..',
           ],
           'sources': [
             'gcapi/gcapi.cc',
             'gcapi/gcapi.h',
           ],
         },
         {
           'target_name': 'gcapi_lib',
           'type': 'static_library',
           'msvs_guid': 'CD2FD73A-6AAB-4886-B887-760D18E8B635',
+          'msvs_existing_vcpj': 'gcapi/gcapi_lib.vcproj',
           'dependencies': [
             '../../google_update/google_update.gyp:google_update',
           ],
           'include_dirs': [
             '../..',
           ],
           'sources': [
             'gcapi/gcapi.cc',
             'gcapi/gcapi.h',
           ],
         },
         {
           'target_name': 'gcapi_test',
           'type': 'executable',
           'msvs_guid': 'B64B396B-8EF1-4B6B-A07E-48D40EB961AB',
+          'msvs_existing_vcproj': 'gcapi/gcapi_test.vcproj',
           'dependencies': [
             'gcapi_dll',
             'gcapi_lib',
           ],
           'include_dirs': [
             '../..',
           ],
           'sources': [
             'gcapi/gcapi_test.cc',
             'gcapi/gcapi_test.rc',
             'gcapi/resource.h',
           ],
         },
         {
           'target_name': 'installer_unittests',
           'type': 'executable',
           'msvs_guid': '903F8C1E-537A-4C9E-97BE-075147CBE769',
+          'msvs_existing_vcproj': 'util/installer_unittests.vcproj',
           'dependencies': [
             'installer_util',
             'installer_util_strings',
             '../../base/base.gyp:base',
             '../../testing/gtest.gyp:gtest',
           ],
           'include_dirs': [
             '../..',
           ],
           'sources': [
@@ skipping 11 matching lines @@
             'util/move_tree_work_item_unittest.cc',
             'util/run_all_unittests.cc',
             'util/set_reg_value_work_item_unittest.cc',
             'util/work_item_list_unittest.cc',
           ],
         },
         {
           'target_name': 'installer_util_strings',
           'type': 'none',
           'msvs_guid': '0026A376-C4F1-4575-A1BA-578C69F07013',
+          'msvs_existing_vcproj': 'util/prebuild/util_prebuild.vcproj',
           'actions': [
             {
               # TODO(sgk):  Clean this up so that we pass in the
               # file names to the script instead of having it hard-code
               # matching path names internally.
               'action_name': 'installer_util_strings',
               'inputs': [
                 'util/prebuild/create_string_rc.py',
                 '../app/generated_resources.grd',
               ],
@@ skipping 17 matching lines @@
           'direct_dependent_settings': {
             'include_dirs': [
                '<(SHARED_INTERMEDIATE_DIR)/installer_util_strings',
             ],
           },
         },
         {
           'target_name': 'mini_installer',
           'type': 'executable',
           'msvs_guid': '24A5AC7C-280B-4899-9153-6BA570A081E7',
+          'msvs_existing_vcproj': 'mini_installer/mini_installer.vcproj',
           'dependencies': [
             '../chrome.gyp:app',
             '../chrome.gyp:chrome_dll',
           ],
           'include_dirs': [
             '../..',
             '<(PRODUCT_DIR)',
             '<(INTERMEDIATE_DIR)',
           ],
           'sources': [
@@ skipping 97 matching lines @@
               'variables': {
                  'BRANDING': '../../chrome/app/theme/chromium/BRANDING',
               },
             }],
           ],
         },
         {
           'target_name': 'mini_installer_test',
           'type': 'executable',
           'msvs_guid': '4B6E199A-034A-49BD-AB93-458DD37E45B1',
+          'msvs_existing_vcproj': '../test/mini_installer_test/mini_installer_test.vcproj',
           'dependencies': [
             'installer_util',
             '../../base/base.gyp:base',
             '../../testing/gtest.gyp:gtest',
           ],
           'include_dirs': [
             '../..',
           ],
           'sources': [
             'setup/setup_constants.cc',
             'util/run_all_unittests.cc',
             '../test/mini_installer_test/chrome_mini_installer.cc',
             '../test/mini_installer_test/chrome_mini_installer.h',
             '../test/mini_installer_test/mini_installer_test_constants.cc',
             '../test/mini_installer_test/mini_installer_test_constants.h',
             '../test/mini_installer_test/test.cc',
           ],
         },
         {
           'target_name': 'setup',
           'type': 'executable',
           'msvs_guid': '21C76E6E-8B38-44D6-8148-B589C13B9554',
+          'msvs_existing_vcproj': 'setup/setup.vcproj',
           'dependencies': [
             'installer_util',
             'installer_util_strings',
             '../chrome.gyp:app',
             '../chrome.gyp:chrome_dll',
             '../../build/win/system.gyp:cygwin',
             '../../courgette/courgette.gyp:courgette_lib',
             '../../third_party/bspatch/bspatch.gyp:bspatch',
           ],
           'include_dirs': [
@@ skipping 111 matching lines @@
       'variables': {
          'BRANDING': '../../chrome/app/theme/google_chrome/BRANDING',
       },
     }, { # else branding!="Chrome"
       'variables': {
          'BRANDING': '../../chrome/app/theme/chromium/BRANDING',
       },
     }],
   ],
 }