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

chrome/browser/chromeos/file_system_provider/fileapi/provider_async_file_util.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/file_system_provider/fileapi/provider_async_file_util.h"
 
 #include "base/callback.h"
 #include "base/files/file.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
+#include "base/memory/ptr_util.h"
 #include "chrome/browser/chromeos/file_system_provider/mount_path_util.h"
 #include "chrome/browser/chromeos/file_system_provider/provided_file_system_interface.h"
 #include "content/public/browser/browser_thread.h"
 #include "storage/browser/blob/shareable_file_reference.h"
 #include "storage/browser/fileapi/file_system_operation_context.h"
 #include "storage/browser/fileapi/file_system_url.h"
 
 using content::BrowserThread;
 
 namespace chromeos {
 namespace file_system_provider {
 namespace internal {
 namespace {
 
 // Executes GetFileInfo on the UI thread.
 void GetFileInfoOnUIThread(
-    scoped_ptr<storage::FileSystemOperationContext> context,
+    std::unique_ptr<storage::FileSystemOperationContext> context,
     const storage::FileSystemURL& url,
     int fields,
     const ProvidedFileSystemInterface::GetMetadataCallback& callback) {
   util::FileSystemURLParser parser(url);
   if (!parser.Parse()) {
-    callback.Run(make_scoped_ptr<EntryMetadata>(NULL),
+    callback.Run(base::WrapUnique<EntryMetadata>(NULL),
                  base::File::FILE_ERROR_INVALID_OPERATION);
     return;
   }
 
   int fsp_fields = 0;
   if (fields & storage::FileSystemOperation::GET_METADATA_FIELD_IS_DIRECTORY)
     fsp_fields |= ProvidedFileSystemInterface::METADATA_FIELD_IS_DIRECTORY;
   if (fields & storage::FileSystemOperation::GET_METADATA_FIELD_SIZE)
     fsp_fields |= ProvidedFileSystemInterface::METADATA_FIELD_SIZE;
   if (fields & storage::FileSystemOperation::GET_METADATA_FIELD_LAST_MODIFIED)
     fsp_fields |= ProvidedFileSystemInterface::METADATA_FIELD_MODIFICATION_TIME;
 
   parser.file_system()->GetMetadata(parser.file_path(), fsp_fields, callback);
 }
 
 // Routes the response of GetFileInfo back to the IO thread with a type
 // conversion.
 void OnGetFileInfo(int fields,
                    const storage::AsyncFileUtil::GetFileInfoCallback& callback,
-                   scoped_ptr<EntryMetadata> metadata,
+                   std::unique_ptr<EntryMetadata> metadata,
                    base::File::Error result) {
   if (result != base::File::FILE_OK) {
     BrowserThread::PostTask(BrowserThread::IO,
                             FROM_HERE,
                             base::Bind(callback, result, base::File::Info()));
     return;
   }
 
   DCHECK(metadata.get());
   base::File::Info file_info;
@@ skipping 13 matching lines @@
 
   file_info.is_symbolic_link = false;  // Not supported.
 
   BrowserThread::PostTask(BrowserThread::IO,
                           FROM_HERE,
                           base::Bind(callback, base::File::FILE_OK, file_info));
 }
 
 // Executes ReadDirectory on the UI thread.
 void ReadDirectoryOnUIThread(
-    scoped_ptr<storage::FileSystemOperationContext> context,
+    std::unique_ptr<storage::FileSystemOperationContext> context,
     const storage::FileSystemURL& url,
     const storage::AsyncFileUtil::ReadDirectoryCallback& callback) {
   util::FileSystemURLParser parser(url);
   if (!parser.Parse()) {
     callback.Run(base::File::FILE_ERROR_INVALID_OPERATION,
                  storage::AsyncFileUtil::EntryList(),
                  false /* has_more */);
     return;
   }
 
   parser.file_system()->ReadDirectory(parser.file_path(), callback);
 }
 
 // Routes the response of ReadDirectory back to the IO thread.
 void OnReadDirectory(
     const storage::AsyncFileUtil::ReadDirectoryCallback& callback,
     base::File::Error result,
     const storage::AsyncFileUtil::EntryList& entry_list,
     bool has_more) {
   BrowserThread::PostTask(BrowserThread::IO,
                           FROM_HERE,
                           base::Bind(callback, result, entry_list, has_more));
 }
 
 // Executes CreateDirectory on the UI thread.
 void CreateDirectoryOnUIThread(
-    scoped_ptr<storage::FileSystemOperationContext> context,
+    std::unique_ptr<storage::FileSystemOperationContext> context,
     const storage::FileSystemURL& url,
     bool exclusive,
     bool recursive,
     const storage::AsyncFileUtil::StatusCallback& callback) {
   util::FileSystemURLParser parser(url);
   if (!parser.Parse()) {
     callback.Run(base::File::FILE_ERROR_INVALID_OPERATION);
     return;
   }
 
@@ skipping 11 matching lines @@
       (result == base::File::FILE_ERROR_EXISTS && !exclusive)
           ? base::File::FILE_OK
           : result;
 
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE, base::Bind(callback, error));
 }
 
 // Executes DeleteEntry on the UI thread.
 void DeleteEntryOnUIThread(
-    scoped_ptr<storage::FileSystemOperationContext> context,
+    std::unique_ptr<storage::FileSystemOperationContext> context,
     const storage::FileSystemURL& url,
     bool recursive,
     const storage::AsyncFileUtil::StatusCallback& callback) {
   util::FileSystemURLParser parser(url);
   if (!parser.Parse()) {
     callback.Run(base::File::FILE_ERROR_INVALID_OPERATION);
     return;
   }
 
   parser.file_system()->DeleteEntry(parser.file_path(), recursive, callback);
 }
 
 // Routes the response of DeleteEntry back to the IO thread.
 void OnDeleteEntry(const storage::AsyncFileUtil::StatusCallback& callback,
                    base::File::Error result) {
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE, base::Bind(callback, result));
 }
 
 // Executes CreateFile on the UI thread.
 void CreateFileOnUIThread(
-    scoped_ptr<storage::FileSystemOperationContext> context,
+    std::unique_ptr<storage::FileSystemOperationContext> context,
     const storage::FileSystemURL& url,
     const storage::AsyncFileUtil::StatusCallback& callback) {
   util::FileSystemURLParser parser(url);
   if (!parser.Parse()) {
     callback.Run(base::File::FILE_ERROR_INVALID_OPERATION);
     return;
   }
 
   parser.file_system()->CreateFile(parser.file_path(), callback);
 }
 
 // Routes the response of CreateFile to a callback of EnsureFileExists() on the
 // IO thread.
 void OnCreateFileForEnsureFileExists(
     const storage::AsyncFileUtil::EnsureFileExistsCallback& callback,
     base::File::Error result) {
   const bool created = result == base::File::FILE_OK;
 
   // If the file already existed, then return success anyway, since it is not
   // an error.
   const base::File::Error error =
       result == base::File::FILE_ERROR_EXISTS ? base::File::FILE_OK : result;
 
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE, base::Bind(callback, error, created));
 }
 
 // Executes CopyEntry on the UI thread.
 void CopyEntryOnUIThread(
-    scoped_ptr<storage::FileSystemOperationContext> context,
+    std::unique_ptr<storage::FileSystemOperationContext> context,
     const storage::FileSystemURL& source_url,
     const storage::FileSystemURL& target_url,
     const storage::AsyncFileUtil::StatusCallback& callback) {
   util::FileSystemURLParser source_parser(source_url);
   util::FileSystemURLParser target_parser(target_url);
 
   if (!source_parser.Parse() || !target_parser.Parse() ||
       source_parser.file_system() != target_parser.file_system()) {
     callback.Run(base::File::FILE_ERROR_INVALID_OPERATION);
     return;
   }
 
   target_parser.file_system()->CopyEntry(
       source_parser.file_path(), target_parser.file_path(), callback);
 }
 
 // Routes the response of CopyEntry to a callback of CopyLocalFile() on the
 // IO thread.
 void OnCopyEntry(const storage::AsyncFileUtil::StatusCallback& callback,
                  base::File::Error result) {
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE, base::Bind(callback, result));
 }
 
 // Executes MoveEntry on the UI thread.
 void MoveEntryOnUIThread(
-    scoped_ptr<storage::FileSystemOperationContext> context,
+    std::unique_ptr<storage::FileSystemOperationContext> context,
     const storage::FileSystemURL& source_url,
     const storage::FileSystemURL& target_url,
     const storage::AsyncFileUtil::StatusCallback& callback) {
   util::FileSystemURLParser source_parser(source_url);
   util::FileSystemURLParser target_parser(target_url);
 
   if (!source_parser.Parse() || !target_parser.Parse() ||
       source_parser.file_system() != target_parser.file_system()) {
     callback.Run(base::File::FILE_ERROR_INVALID_OPERATION);
     return;
   }
 
   target_parser.file_system()->MoveEntry(
       source_parser.file_path(), target_parser.file_path(), callback);
 }
 
 // Routes the response of CopyEntry to a callback of MoveLocalFile() on the
 // IO thread.
 void OnMoveEntry(const storage::AsyncFileUtil::StatusCallback& callback,
                  base::File::Error result) {
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE, base::Bind(callback, result));
 }
 
 // Executes Truncate on the UI thread.
 void TruncateOnUIThread(
-    scoped_ptr<storage::FileSystemOperationContext> context,
+    std::unique_ptr<storage::FileSystemOperationContext> context,
     const storage::FileSystemURL& url,
     int64_t length,
     const storage::AsyncFileUtil::StatusCallback& callback) {
   util::FileSystemURLParser parser(url);
   if (!parser.Parse()) {
     callback.Run(base::File::FILE_ERROR_INVALID_OPERATION);
     return;
   }
 
   parser.file_system()->Truncate(parser.file_path(), length, callback);
 }
 
 // Routes the response of Truncate back to the IO thread.
 void OnTruncate(const storage::AsyncFileUtil::StatusCallback& callback,
                 base::File::Error result) {
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE, base::Bind(callback, result));
 }
 
 }  // namespace
 
 ProviderAsyncFileUtil::ProviderAsyncFileUtil() {}
 
 ProviderAsyncFileUtil::~ProviderAsyncFileUtil() {}
 
 void ProviderAsyncFileUtil::CreateOrOpen(
-    scoped_ptr<storage::FileSystemOperationContext> context,
+    std::unique_ptr<storage::FileSystemOperationContext> context,
     const storage::FileSystemURL& url,
     int file_flags,
     const CreateOrOpenCallback& callback) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   if ((file_flags & base::File::FLAG_CREATE) ||
       (file_flags & base::File::FLAG_OPEN_ALWAYS) ||
       (file_flags & base::File::FLAG_CREATE_ALWAYS) ||
       (file_flags & base::File::FLAG_OPEN_TRUNCATED)) {
     callback.Run(base::File(base::File::FILE_ERROR_ACCESS_DENIED),
                  base::Closure());
     return;
   }
 
   NOTIMPLEMENTED();
   callback.Run(base::File(base::File::FILE_ERROR_INVALID_OPERATION),
                base::Closure());
 }
 
 void ProviderAsyncFileUtil::EnsureFileExists(
-    scoped_ptr<storage::FileSystemOperationContext> context,
+    std::unique_ptr<storage::FileSystemOperationContext> context,
     const storage::FileSystemURL& url,
     const EnsureFileExistsCallback& callback) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   BrowserThread::PostTask(
       BrowserThread::UI,
       FROM_HERE,
       base::Bind(&CreateFileOnUIThread,
                  base::Passed(&context),
                  url,
                  base::Bind(&OnCreateFileForEnsureFileExists, callback)));
 }
 
 void ProviderAsyncFileUtil::CreateDirectory(
-    scoped_ptr<storage::FileSystemOperationContext> context,
+    std::unique_ptr<storage::FileSystemOperationContext> context,
     const storage::FileSystemURL& url,
     bool exclusive,
     bool recursive,
     const StatusCallback& callback) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   BrowserThread::PostTask(
       BrowserThread::UI,
       FROM_HERE,
       base::Bind(&CreateDirectoryOnUIThread,
                  base::Passed(&context),
                  url,
                  exclusive,
                  recursive,
                  base::Bind(&OnCreateDirectory, exclusive, callback)));
 }
 
 void ProviderAsyncFileUtil::GetFileInfo(
-    scoped_ptr<storage::FileSystemOperationContext> context,
+    std::unique_ptr<storage::FileSystemOperationContext> context,
     const storage::FileSystemURL& url,
     int fields,
     const GetFileInfoCallback& callback) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   BrowserThread::PostTask(
       BrowserThread::UI, FROM_HERE,
       base::Bind(&GetFileInfoOnUIThread, base::Passed(&context), url, fields,
                  base::Bind(&OnGetFileInfo, fields, callback)));
 }
 
 void ProviderAsyncFileUtil::ReadDirectory(
-    scoped_ptr<storage::FileSystemOperationContext> context,
+    std::unique_ptr<storage::FileSystemOperationContext> context,
     const storage::FileSystemURL& url,
     const ReadDirectoryCallback& callback) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   BrowserThread::PostTask(BrowserThread::UI,
                           FROM_HERE,
                           base::Bind(&ReadDirectoryOnUIThread,
                                      base::Passed(&context),
                                      url,
                                      base::Bind(&OnReadDirectory, callback)));
 }
 
 void ProviderAsyncFileUtil::Touch(
-    scoped_ptr<storage::FileSystemOperationContext> context,
+    std::unique_ptr<storage::FileSystemOperationContext> context,
     const storage::FileSystemURL& url,
     const base::Time& last_access_time,
     const base::Time& last_modified_time,
     const StatusCallback& callback) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   callback.Run(base::File::FILE_ERROR_ACCESS_DENIED);
 }
 
 void ProviderAsyncFileUtil::Truncate(
-    scoped_ptr<storage::FileSystemOperationContext> context,
+    std::unique_ptr<storage::FileSystemOperationContext> context,
     const storage::FileSystemURL& url,
     int64_t length,
     const StatusCallback& callback) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   BrowserThread::PostTask(BrowserThread::UI,
                           FROM_HERE,
                           base::Bind(&TruncateOnUIThread,
                                      base::Passed(&context),
                                      url,
                                      length,
                                      base::Bind(&OnTruncate, callback)));
 }
 
 void ProviderAsyncFileUtil::CopyFileLocal(
-    scoped_ptr<storage::FileSystemOperationContext> context,
+    std::unique_ptr<storage::FileSystemOperationContext> context,
     const storage::FileSystemURL& src_url,
     const storage::FileSystemURL& dest_url,
     CopyOrMoveOption option,
     const CopyFileProgressCallback& progress_callback,
     const StatusCallback& callback) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   // TODO(mtomasz): Consier adding support for options (preserving last modified
   // time) as well as the progress callback.
   BrowserThread::PostTask(BrowserThread::UI,
                           FROM_HERE,
                           base::Bind(&CopyEntryOnUIThread,
                                      base::Passed(&context),
                                      src_url,
                                      dest_url,
                                      base::Bind(&OnCopyEntry, callback)));
 }
 
 void ProviderAsyncFileUtil::MoveFileLocal(
-    scoped_ptr<storage::FileSystemOperationContext> context,
+    std::unique_ptr<storage::FileSystemOperationContext> context,
     const storage::FileSystemURL& src_url,
     const storage::FileSystemURL& dest_url,
     CopyOrMoveOption option,
     const StatusCallback& callback) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   // TODO(mtomasz): Consier adding support for options (preserving last modified
   // time) as well as the progress callback.
   BrowserThread::PostTask(BrowserThread::UI,
                           FROM_HERE,
                           base::Bind(&MoveEntryOnUIThread,
                                      base::Passed(&context),
                                      src_url,
                                      dest_url,
                                      base::Bind(&OnMoveEntry, callback)));
 }
 
 void ProviderAsyncFileUtil::CopyInForeignFile(
-    scoped_ptr<storage::FileSystemOperationContext> context,
+    std::unique_ptr<storage::FileSystemOperationContext> context,
     const base::FilePath& src_file_path,
     const storage::FileSystemURL& dest_url,
     const StatusCallback& callback) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   callback.Run(base::File::FILE_ERROR_ACCESS_DENIED);
 }
 
 void ProviderAsyncFileUtil::DeleteFile(
-    scoped_ptr<storage::FileSystemOperationContext> context,
+    std::unique_ptr<storage::FileSystemOperationContext> context,
     const storage::FileSystemURL& url,
     const StatusCallback& callback) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   BrowserThread::PostTask(BrowserThread::UI,
                           FROM_HERE,
                           base::Bind(&DeleteEntryOnUIThread,
                                      base::Passed(&context),
                                      url,
                                      false,  // recursive
                                      base::Bind(&OnDeleteEntry, callback)));
 }
 
 void ProviderAsyncFileUtil::DeleteDirectory(
-    scoped_ptr<storage::FileSystemOperationContext> context,
+    std::unique_ptr<storage::FileSystemOperationContext> context,
     const storage::FileSystemURL& url,
     const StatusCallback& callback) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   BrowserThread::PostTask(BrowserThread::UI,
                           FROM_HERE,
                           base::Bind(&DeleteEntryOnUIThread,
                                      base::Passed(&context),
                                      url,
                                      false,  // recursive
                                      base::Bind(&OnDeleteEntry, callback)));
 }
 
 void ProviderAsyncFileUtil::DeleteRecursively(
-    scoped_ptr<storage::FileSystemOperationContext> context,
+    std::unique_ptr<storage::FileSystemOperationContext> context,
     const storage::FileSystemURL& url,
     const StatusCallback& callback) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   BrowserThread::PostTask(BrowserThread::UI,
                           FROM_HERE,
                           base::Bind(&DeleteEntryOnUIThread,
                                      base::Passed(&context),
                                      url,
                                      true,  // recursive
                                      base::Bind(&OnDeleteEntry, callback)));
 }
 
 void ProviderAsyncFileUtil::CreateSnapshotFile(
-    scoped_ptr<storage::FileSystemOperationContext> context,
+    std::unique_ptr<storage::FileSystemOperationContext> context,
     const storage::FileSystemURL& url,
     const CreateSnapshotFileCallback& callback) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   NOTIMPLEMENTED();
   callback.Run(base::File::FILE_ERROR_INVALID_OPERATION,
                base::File::Info(),
                base::FilePath(),
                scoped_refptr<storage::ShareableFileReference>());
 }
 
 }  // namespace internal
 }  // namespace file_system_provider
 }  // namespace chromeos