Fetch extension blacklist states from SafeBrowsing server

chrome/chrome_browser_extensions.gypi

 # Copyright (c) 2013 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.
 
 {
   'targets': [
     {
       'target_name': 'browser_extensions',
       'type': 'static_library',
       'variables': { 'enable_wexit_time_destructors': 1, },
@@ skipping 607 matching lines @@
         'browser/extensions/api/webview/webview_api.h',
         'browser/extensions/app_icon_loader.h',
         'browser/extensions/app_icon_loader_impl.cc',
         'browser/extensions/app_icon_loader_impl.h',
         'browser/extensions/app_sync_bundle.cc',
         'browser/extensions/app_sync_bundle.h',
         'browser/extensions/app_sync_data.cc',
         'browser/extensions/app_sync_data.h',
         'browser/extensions/blacklist.cc',
         'browser/extensions/blacklist.h',
+        'browser/extensions/blacklist_state_fetcher.cc',
+        'browser/extensions/blacklist_state_fetcher.h',
         'browser/extensions/browser_action_test_util.h',
         'browser/extensions/browser_extension_window_controller.cc',
         'browser/extensions/browser_extension_window_controller.h',
         'browser/extensions/browser_permissions_policy_delegate.cc',
         'browser/extensions/browser_permissions_policy_delegate.h',
         'browser/extensions/bundle_installer.cc',
         'browser/extensions/bundle_installer.h',
         'browser/extensions/chrome_extension_function.cc',
         'browser/extensions/chrome_extension_function.h',
         'browser/extensions/chrome_extensions_browser_client.cc',
@@ skipping 557 matching lines @@
           'variables': {
             'proto_in_dir': 'browser/chromeos/contacts',
             'proto_out_dir': 'chrome/browser/chromeos/contacts',
           },
           'includes': [ '../build/protoc.gypi' ]
         },
       ],
     },],  # 'chromeos=1'
   ],  # 'conditions'
 }