Update CrOS to use scoped_refptr<T>::get() rather than implicit "operator T*"

chrome/browser/chromeos/login/login_performer.cc

 // Copyright (c) 2012 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.
 
 #include "chrome/browser/chromeos/login/login_performer.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/logging.h"
@@ skipping 51 matching lines @@
       weak_factory_(this) {
   DCHECK(default_performer_ == NULL)
       << "LoginPerformer should have only one instance.";
   default_performer_ = this;
 }
 
 LoginPerformer::~LoginPerformer() {
   DVLOG(1) << "Deleting LoginPerformer";
   DCHECK(default_performer_ != NULL) << "Default instance should exist.";
   default_performer_ = NULL;
-  if (authenticator_)
+  if (authenticator_.get())
     authenticator_->SetConsumer(NULL);
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // LoginPerformer, LoginStatusConsumer implementation:
 
 void LoginPerformer::OnLoginFailure(const LoginFailure& failure) {
   content::RecordAction(UserMetricsAction("Login_Failure"));
   UMA_HISTOGRAM_ENUMERATION("Login.FailureReason", failure.reason(),
                             LoginFailure::NUM_FAILURE_REASONS);
@@ skipping 436 matching lines @@
                    profile,
                    user_context_,
                    std::string(),
                    std::string()));
   }
   user_context_.password.clear();
   user_context_.auth_code.clear();
 }
 
 }  // namespace chromeos