Replace chromeos::UserManager::Get() with chromeos::GetUserManager().

chrome/browser/chromeos/login/signin/oauth2_login_manager.cc

Index: chrome/browser/chromeos/login/signin/oauth2_login_manager.cc
diff --git a/chrome/browser/chromeos/login/signin/oauth2_login_manager.cc b/chrome/browser/chromeos/login/signin/oauth2_login_manager.cc
index c6a3fe826dc9f326f926a939d82984df110d9317..1e18ea77af0f948fc203ffb39a57aa7dfac5d192 100644
--- a/chrome/browser/chromeos/login/signin/oauth2_login_manager.cc
+++ b/chrome/browser/chromeos/login/signin/oauth2_login_manager.cc
@@ -108,8 +108,8 @@ void OAuth2LoginManager::RestoreSessionFromSavedTokens() {
     // and OnRefreshTokenAvailable is not called. Flagging it here would
     // cause user to go through Gaia in next login to obtain a new refresh
     // token.
-    UserManager::Get()->SaveUserOAuthStatus(primary_account_id,
-                                            User::OAUTH_TOKEN_STATUS_UNKNOWN);
+    GetUserManager()->SaveUserOAuthStatus(primary_account_id,
+                                          User::OAUTH_TOKEN_STATUS_UNKNOWN);
 
     token_service->LoadCredentials(primary_account_id);
   }
@@ -137,15 +137,15 @@ void OAuth2LoginManager::OnRefreshTokenAvailable(
 
   // Do not validate tokens for supervised users, as they don't actually have
   // oauth2 token.
-  if (UserManager::Get()->IsLoggedInAsLocallyManagedUser()) {
+  if (GetUserManager()->IsLoggedInAsLocallyManagedUser()) {
     LOG(WARNING) << "Logged in as managed user, skip token validation.";
     return;
   }
   // Only restore session cookies for the primary account in the profile.
   if (GetPrimaryAccountId() == account_id) {
     // Token is loaded. Undo the flagging before token loading.
-    UserManager::Get()->SaveUserOAuthStatus(account_id,
-                                            User::OAUTH2_TOKEN_STATUS_VALID);
+    GetUserManager()->SaveUserOAuthStatus(account_id,
+                                          User::OAUTH2_TOKEN_STATUS_VALID);
     VerifySessionCookies();
   }
 }