Remove implicit conversions from scoped_refptr to T* in c/b/chromeos/login

chrome/browser/chromeos/login/users/avatar/user_image_manager_impl.cc

 // Copyright 2014 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/users/avatar/user_image_manager_impl.h"
 
 #include "base/bind.h"
 #include "base/debug/trace_event.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
@@ skipping 418 matching lines @@
 
   parent_->OnJobChangedUserImage();
 }
 
 void UserImageManagerImpl::Job::SaveImageAndUpdateLocalState() {
   base::FilePath user_data_dir;
   PathService::Get(chrome::DIR_USER_DATA, &user_data_dir);
   image_path_ = user_data_dir.Append(user_id() + kSafeImagePathExtension);
 
   base::PostTaskAndReplyWithResult(
-      parent_->background_task_runner_,
+      parent_->background_task_runner_.get(),
       FROM_HERE,
       base::Bind(&SaveImage, user_image_, image_path_),
       base::Bind(&Job::OnSaveImageDone, weak_factory_.GetWeakPtr()));
 }
 
 void UserImageManagerImpl::Job::OnSaveImageDone(bool success) {
   if (success || image_index_ == user_manager::User::USER_IMAGE_PROFILE)
     UpdateLocalState();
   NotifyJobDone();
 }
@@ skipping 571 matching lines @@
 
 bool UserImageManagerImpl::IsUserLoggedInAndRegular() const {
   const user_manager::User* user = GetUser();
   if (!user)
     return false;
   return user->is_logged_in() &&
          user->GetType() == user_manager::USER_TYPE_REGULAR;
 }
 
 }  // namespace chromeos