NetworkPortalDetectorInterface class.

chrome/browser/chromeos/chrome_browser_main_chromeos.cc

Index: chrome/browser/chromeos/chrome_browser_main_chromeos.cc
diff --git a/chrome/browser/chromeos/chrome_browser_main_chromeos.cc b/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
index c36221efbd8b2196454fdc5664605324f5ecdab9..25dabe7670aad0aafb093659d3274020ec98c09b 100644
--- a/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
+++ b/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
@@ -550,8 +550,7 @@ void ChromeBrowserMainPartsChromeos::PostProfileInit() {
   // NetworkStateHandler and initiates captive portal detection for
   // active networks. Should be called before call to CreateSessionManager,
   // because it depends on NetworkPortalDetector.
-  NetworkPortalDetectorImpl::Initialize(
-      g_browser_process->system_request_context());
+  InitializeNetworkPortalDetector(g_browser_process->system_request_context());
   {
 #if defined(GOOGLE_CHROME_BUILD)
     bool is_official_build = true;