Convert //chrome/browser/chromeos from scoped_ptr to std::unique_ptr

chrome/browser/chromeos/drive/fileapi/file_system_backend_delegate.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/drive/fileapi/file_system_backend_delegate.h"
 
+#include <memory>
+
 #include "base/bind.h"
 #include "base/files/file_path.h"
-#include "base/memory/scoped_ptr.h"
 #include "chrome/browser/chromeos/drive/file_system_util.h"
 #include "chrome/browser/chromeos/drive/fileapi/async_file_util.h"
 #include "chrome/browser/chromeos/drive/fileapi/fileapi_worker.h"
 #include "chrome/browser/chromeos/drive/fileapi/webkit_file_stream_reader_impl.h"
 #include "chrome/browser/chromeos/drive/fileapi/webkit_file_stream_writer_impl.h"
 #include "components/drive/drive_api_util.h"
 #include "components/drive/file_system_interface.h"
 #include "content/public/browser/browser_thread.h"
 #include "storage/browser/fileapi/async_file_util.h"
 #include "storage/browser/fileapi/file_stream_reader.h"
 #include "storage/browser/fileapi/file_system_context.h"
 #include "storage/browser/fileapi/file_system_url.h"
 
 using content::BrowserThread;
 
 namespace drive {
 namespace {
 
 // Called on the UI thread after GetRedirectURLForContentsOnUIThread. Obtains
 // the browser URL from |entry|. |callback| will be called on the IO thread.
 void GetRedirectURLForContentsOnUIThreadWithResourceEntry(
     const storage::URLCallback& callback,
     FileError error,
-    scoped_ptr<ResourceEntry> entry) {
+    std::unique_ptr<ResourceEntry> entry) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   GURL url;
   if (error == FILE_ERROR_OK && entry->has_file_specific_info() &&
       entry->file_specific_info().is_hosted_document()) {
     url = GURL(entry->file_specific_info().alternate_url());
   }
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE, base::Bind(callback, url));
 }
 
@@ skipping 33 matching lines @@
 FileSystemBackendDelegate::~FileSystemBackendDelegate() {
 }
 
 storage::AsyncFileUtil* FileSystemBackendDelegate::GetAsyncFileUtil(
     storage::FileSystemType type) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   DCHECK_EQ(storage::kFileSystemTypeDrive, type);
   return async_file_util_.get();
 }
 
-scoped_ptr<storage::FileStreamReader>
+std::unique_ptr<storage::FileStreamReader>
 FileSystemBackendDelegate::CreateFileStreamReader(
     const storage::FileSystemURL& url,
     int64_t offset,
     int64_t max_bytes_to_read,
     const base::Time& expected_modification_time,
     storage::FileSystemContext* context) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   DCHECK_EQ(storage::kFileSystemTypeDrive, url.type());
 
   base::FilePath file_path = util::ExtractDrivePathFromFileSystemUrl(url);
   if (file_path.empty())
-    return scoped_ptr<storage::FileStreamReader>();
+    return std::unique_ptr<storage::FileStreamReader>();
 
-  return scoped_ptr<storage::FileStreamReader>(
+  return std::unique_ptr<storage::FileStreamReader>(
       new internal::WebkitFileStreamReaderImpl(
           base::Bind(&fileapi_internal::GetFileSystemFromUrl, url),
-          context->default_file_task_runner(),
-          file_path,
-          offset,
+          context->default_file_task_runner(), file_path, offset,
           expected_modification_time));
 }
 
-scoped_ptr<storage::FileStreamWriter>
+std::unique_ptr<storage::FileStreamWriter>
 FileSystemBackendDelegate::CreateFileStreamWriter(
     const storage::FileSystemURL& url,
     int64_t offset,
     storage::FileSystemContext* context) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   DCHECK_EQ(storage::kFileSystemTypeDrive, url.type());
 
   base::FilePath file_path = util::ExtractDrivePathFromFileSystemUrl(url);
   // Hosted documents don't support stream writer.
   if (file_path.empty() || util::HasHostedDocumentExtension(file_path))
-    return scoped_ptr<storage::FileStreamWriter>();
+    return std::unique_ptr<storage::FileStreamWriter>();
 
-  return scoped_ptr<storage::FileStreamWriter>(
+  return std::unique_ptr<storage::FileStreamWriter>(
       new internal::WebkitFileStreamWriterImpl(
           base::Bind(&fileapi_internal::GetFileSystemFromUrl, url),
-          context->default_file_task_runner(),
-          file_path,
-          offset));
+          context->default_file_task_runner(), file_path, offset));
 }
 
 storage::WatcherManager* FileSystemBackendDelegate::GetWatcherManager(
     storage::FileSystemType type) {
   NOTIMPLEMENTED();
   return NULL;
 }
 
 void FileSystemBackendDelegate::GetRedirectURLForContents(
     const storage::FileSystemURL& url,
     const storage::URLCallback& callback) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   BrowserThread::PostTask(
       BrowserThread::UI,
       FROM_HERE,
       base::Bind(&GetRedirectURLForContentsOnUIThread, url, callback));
 }
 
 }  // namespace drive