Turns on use_mojo=1 for windows.

chrome/installer/mini_installer.gyp

 {
   'variables': {
     'version_py': '<(DEPTH)/build/util/version.py',
     'version_path': '../../chrome/VERSION',
     'lastchange_path': '<(DEPTH)/build/util/LASTCHANGE',
     # 'branding_dir' is set in the 'conditions' section at the bottom.
     'msvs_use_common_release': 0,
     'msvs_use_common_linker_extras': 0,
     'mini_installer_internal_deps%': 0,
     'mini_installer_official_deps%': 0,
@@ skipping 205 matching lines @@
                 }],
                 ['icu_use_data_file_flag == 0', {
                   'inputs': [
                     '<(PRODUCT_DIR)/icudt.dll',
                   ],
                 }, { # else icu_use_data_file_flag != 0
                   'inputs': [
                     '<(PRODUCT_DIR)/icudtl.dat',
                   ],
                 }],
+                ['use_mojo==0', {
+                  'inputs!': [
+                    '<(PRODUCT_DIR)/mojo_system.dll',
+                  ],
+                }],
               ],
               'inputs': [
                 '<(create_installer_archive_py_path)',
                 '<(PRODUCT_DIR)/chrome.exe',
                 '<(PRODUCT_DIR)/chrome.dll',
+                '<(PRODUCT_DIR)/mojo_system.dll',
                 '<(PRODUCT_DIR)/nacl64.exe',
                 '<(PRODUCT_DIR)/ppGoogleNaClPluginChrome.dll',
                 '<(PRODUCT_DIR)/nacl_irt_x86_32.nexe',
                 '<(PRODUCT_DIR)/nacl_irt_x86_64.nexe',
                 '<(PRODUCT_DIR)/locales/en-US.pak',
               ],
               'outputs': [
                 # Also note that chrome.packed.7z is defined as an output in a
                 # conditional above.
                 'xxx2.out',
@@ skipping 67 matching lines @@
       'variables': {
          'branding_dir': '../app/theme/google_chrome',
       },
     }, { # else branding!="Chrome"
       'variables': {
          'branding_dir': '../app/theme/chromium',
       },
     }],
   ],
 }