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

chrome/browser/chromeos/login/signin/oauth2_browsertest.cc

Index: chrome/browser/chromeos/login/signin/oauth2_browsertest.cc
diff --git a/chrome/browser/chromeos/login/signin/oauth2_browsertest.cc b/chrome/browser/chromeos/login/signin/oauth2_browsertest.cc
index 7a9c8ba8843f81b306497ed456c5f34c3132c93a..80ac6595182550442781d32cd5a641897e5dbde6 100644
--- a/chrome/browser/chromeos/login/signin/oauth2_browsertest.cc
+++ b/chrome/browser/chromeos/login/signin/oauth2_browsertest.cc
@@ -191,7 +191,7 @@ class OAuth2Test : public OobeBaseTest {
     if (!AddUserToSession(username, password))
       return false;
 
-    if (const User* active_user = UserManager::Get()->GetActiveUser())
+    if (const User* active_user = GetUserManager()->GetActiveUser())
       return active_user->email() == username;
 
     return false;
@@ -216,7 +216,7 @@ class OAuth2Test : public OobeBaseTest {
  protected:
   // OobeBaseTest overrides.
   virtual Profile* profile() OVERRIDE {
-    if (UserManager::Get()->GetActiveUser())
+    if (GetUserManager()->GetActiveUser())
       return ProfileManager::GetPrimaryUserProfile();
 
     return OobeBaseTest::profile();
@@ -237,7 +237,7 @@ class OAuth2Test : public OobeBaseTest {
     content::WindowedNotificationObserver(
         chrome::NOTIFICATION_SESSION_STARTED,
         content::NotificationService::AllSources()).Wait();
-    const UserList& logged_users = UserManager::Get()->GetLoggedInUsers();
+    const UserList& logged_users = GetUserManager()->GetLoggedInUsers();
     for (UserList::const_iterator it = logged_users.begin();
          it != logged_users.end(); ++it) {
       if ((*it)->email() == username)