Make setup.exe compatible with the component build.

chrome/installer/mini_installer.gyp

 {
   'variables': {
     'version_py': '../../chrome/tools/build/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,
   },
@@ skipping 195 matching lines @@
                 }],
                 ['enable_metro == 1', {
                   'variables': {
                     'enable_metro_flag': '--enable_metro=1',
                   },
                 }, {
                   'variables': {
                     'enable_metro_flag': '',
                   },
                 }],
+                ['component == "shared_library"', {
+                  'variables': {
+                    'component_build_flag': '--component_build=1',
+                  },
+                }, {
+                  'variables': {
+                    'component_build_flag': '',
+                  },
+                }],
               ],
               'inputs': [
                 '<(create_installer_archive_py_path)',
                 '<(PRODUCT_DIR)/chrome.exe',
                 '<(PRODUCT_DIR)/chrome.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',
                 '<(PRODUCT_DIR)/icudt.dll',
               ],
               'outputs': [
                 'xxx2.out',
                 '<(PRODUCT_DIR)/<(RULE_INPUT_NAME).7z',
                 '<(PRODUCT_DIR)/<(RULE_INPUT_NAME).packed.7z',
                 '<(PRODUCT_DIR)/setup.ex_',
                 '<(INTERMEDIATE_DIR)/packed_files.rc',
               ],
               'action': [
                 'python',
                 '<(create_installer_archive_py_path)',
                 '--build_dir', '<(PRODUCT_DIR)',
                 '--staging_dir', '<(INTERMEDIATE_DIR)',
                 '--input_file', '<(RULE_INPUT_PATH)',
                 '--resource_file_path', '<(INTERMEDIATE_DIR)/packed_files.rc',
                 '<(enable_hidpi_flag)',
                 '<(enable_metro_flag)',
+                '<(component_build_flag)',
                 # TODO(sgk):  may just use environment variables
                 #'--distribution=$(CHROMIUM_BUILD)',
                 '--distribution=_google_chrome',
                 # Optional arguments to generate diff installer
                 #'--last_chrome_installer=C:/Temp/base',
                 #'--setup_exe_format=DIFF',
                 #'--diff_algorithm=COURGETTE',
               ],
               'message': 'Create installer archive'
             },
@@ skipping 12 matching lines @@
       'variables': {
          'branding_dir': '../app/theme/google_chrome',
       },
     }, { # else branding!="Chrome"
       'variables': {
          'branding_dir': '../app/theme/chromium',
       },
     }],
   ],
 }