Fix implicit access to raw pointer of scoped_refptr.

components/drive/drive_uploader.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 "components/drive/drive_uploader.h"
 
 #include <algorithm>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 182 matching lines @@
 
   return StartUploadFile(
       std::unique_ptr<UploadFileInfo>(new UploadFileInfo(
           local_file_path, content_type, callback, progress_callback)),
       base::Bind(&DriveUploader::CallUploadServiceAPINewFile,
                  weak_ptr_factory_.GetWeakPtr(), parent_resource_id, title,
                  options, current_batch_request_));
 }
 
 void DriveUploader::StartBatchProcessing() {
-  DCHECK(current_batch_request_ == nullptr);
+  DCHECK(!current_batch_request_);
   current_batch_request_ =
       new RefCountedBatchRequest(drive_service_->StartBatchRequest());
 }
 
 void DriveUploader::StopBatchProcessing() {
   current_batch_request_ = nullptr;
 }
 
 CancelCallback DriveUploader::UploadExistingFile(
     const std::string& resource_id,
@@ skipping 314 matching lines @@
     DVLOG(1) << "Upload failed " << upload_file_info->DebugString();
     if (error == HTTP_PRECONDITION)
       error = HTTP_CONFLICT;  // ETag mismatch.
     upload_file_info->completion_callback.Run(error,
                                               upload_file_info->upload_location,
                                               std::unique_ptr<FileResource>());
   }
 }
 
 }  // namespace drive