Make FileSystemOperation NOT self-destruct

chrome/browser/media_galleries/fileapi/device_media_async_file_util.h

 // Copyright (c) 2013 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.
 
 #ifndef CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_DEVICE_MEDIA_ASYNC_FILE_UTIL_H_
 #define CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_DEVICE_MEDIA_ASYNC_FILE_UTIL_H_
 
 #include "base/files/file_path.h"
+#include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/platform_file.h"
 #include "webkit/browser/fileapi/async_file_util.h"
 #include "webkit/common/blob/shareable_file_reference.h"
 
 namespace base {
 class SequencedTaskRunner;
 class Time;
 }
 
 namespace fileapi {
 class FileSystemOperationContext;
 class FileSystemURL;
 }
 
 namespace chrome {
 
 class DeviceMediaAsyncFileUtil : public fileapi::AsyncFileUtil {
  public:
   virtual ~DeviceMediaAsyncFileUtil();
 
   // Returns an instance of DeviceMediaAsyncFileUtil. Returns NULL if
   // asynchronous operation is not supported. Callers own the returned
   // object.
   static DeviceMediaAsyncFileUtil* Create(const base::FilePath& profile_path);
 
   // AsyncFileUtil overrides.
   virtual bool CreateOrOpen(
-      fileapi::FileSystemOperationContext* context,
+      scoped_ptr<fileapi::FileSystemOperationContext> context,
       const fileapi::FileSystemURL& url,
       int file_flags,
       const CreateOrOpenCallback& callback) OVERRIDE;
   virtual bool EnsureFileExists(
-      fileapi::FileSystemOperationContext* context,
+      scoped_ptr<fileapi::FileSystemOperationContext> context,
       const fileapi::FileSystemURL& url,
       const EnsureFileExistsCallback& callback) OVERRIDE;
   virtual bool CreateDirectory(
-      fileapi::FileSystemOperationContext* context,
+      scoped_ptr<fileapi::FileSystemOperationContext> context,
       const fileapi::FileSystemURL& url,
       bool exclusive,
       bool recursive,
       const StatusCallback& callback) OVERRIDE;
   virtual bool GetFileInfo(
-      fileapi::FileSystemOperationContext* context,
+      scoped_ptr<fileapi::FileSystemOperationContext> context,
       const fileapi::FileSystemURL& url,
       const GetFileInfoCallback& callback) OVERRIDE;
   virtual bool ReadDirectory(
-      fileapi::FileSystemOperationContext* context,
+      scoped_ptr<fileapi::FileSystemOperationContext> context,
       const fileapi::FileSystemURL& url,
       const ReadDirectoryCallback& callback) OVERRIDE;
   virtual bool Touch(
-      fileapi::FileSystemOperationContext* context,
+      scoped_ptr<fileapi::FileSystemOperationContext> context,
       const fileapi::FileSystemURL& url,
       const base::Time& last_access_time,
       const base::Time& last_modified_time,
       const StatusCallback& callback) OVERRIDE;
   virtual bool Truncate(
-      fileapi::FileSystemOperationContext* context,
+      scoped_ptr<fileapi::FileSystemOperationContext> context,
       const fileapi::FileSystemURL& url,
       int64 length,
       const StatusCallback& callback) OVERRIDE;
   virtual bool CopyFileLocal(
-      fileapi::FileSystemOperationContext* context,
+      scoped_ptr<fileapi::FileSystemOperationContext> context,
       const fileapi::FileSystemURL& src_url,
       const fileapi::FileSystemURL& dest_url,
       const StatusCallback& callback) OVERRIDE;
   virtual bool MoveFileLocal(
-      fileapi::FileSystemOperationContext* context,
+      scoped_ptr<fileapi::FileSystemOperationContext> context,
       const fileapi::FileSystemURL& src_url,
       const fileapi::FileSystemURL& dest_url,
       const StatusCallback& callback) OVERRIDE;
   virtual bool CopyInForeignFile(
-      fileapi::FileSystemOperationContext* context,
+      scoped_ptr<fileapi::FileSystemOperationContext> context,
       const base::FilePath& src_file_path,
       const fileapi::FileSystemURL& dest_url,
       const StatusCallback& callback) OVERRIDE;
   virtual bool DeleteFile(
-      fileapi::FileSystemOperationContext* context,
+      scoped_ptr<fileapi::FileSystemOperationContext> context,
       const fileapi::FileSystemURL& url,
       const StatusCallback& callback) OVERRIDE;
   virtual bool DeleteDirectory(
-      fileapi::FileSystemOperationContext* context,
+      scoped_ptr<fileapi::FileSystemOperationContext> context,
       const fileapi::FileSystemURL& url,
       const StatusCallback& callback) OVERRIDE;
   virtual bool CreateSnapshotFile(
-      fileapi::FileSystemOperationContext* context,
+      scoped_ptr<fileapi::FileSystemOperationContext> context,
       const fileapi::FileSystemURL& url,
       const CreateSnapshotFileCallback& callback) OVERRIDE;
 
  private:
   // Use Create() to get an instance of DeviceMediaAsyncFileUtil.
   explicit DeviceMediaAsyncFileUtil(const base::FilePath& profile_path);
 
   // Called when GetFileInfo method call succeeds. |file_info|
   // contains the |platform_path| file details. |callback| is invoked
   // to complete the GetFileInfo request.
@@ skipping 56 matching lines @@
       const AsyncFileUtil::CreateSnapshotFileCallback& callback,
       base::PlatformFileError error);
 
   // Called when the snapshot file specified by the |snapshot_file_path| is
   // created to hold the contents of the |device_file_path|. If the snapshot
   // file is successfully created, |snapshot_file_path| will be an non-empty
   // file path. In case of failure, |snapshot_file_path| will be an empty file
   // path. Forwards the CreateSnapshot request to the delegate to copy the
   // contents of |device_file_path| to |snapshot_file_path|.
   void OnSnapshotFileCreatedRunTask(
-      fileapi::FileSystemOperationContext* context,
+      scoped_ptr<fileapi::FileSystemOperationContext> context,
       const AsyncFileUtil::CreateSnapshotFileCallback& callback,
       const base::FilePath& device_file_path,
       base::FilePath* snapshot_file_path);
 
   // Profile path.
   const base::FilePath profile_path_;
 
   // For callbacks that may run after destruction.
   base::WeakPtrFactory<DeviceMediaAsyncFileUtil> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DeviceMediaAsyncFileUtil);
 };
 
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_DEVICE_MEDIA_ASYNC_FILE_UTIL_H_