Cleanup: return value and null-callback fixups on AsyncFileUtil interface

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"
@@ skipping 16 matching lines @@
 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(
+  virtual void CreateOrOpen(
       scoped_ptr<fileapi::FileSystemOperationContext> context,
       const fileapi::FileSystemURL& url,
       int file_flags,
       const CreateOrOpenCallback& callback) OVERRIDE;
-  virtual bool EnsureFileExists(
+  virtual void EnsureFileExists(
       scoped_ptr<fileapi::FileSystemOperationContext> context,
       const fileapi::FileSystemURL& url,
       const EnsureFileExistsCallback& callback) OVERRIDE;
-  virtual bool CreateDirectory(
+  virtual void CreateDirectory(
       scoped_ptr<fileapi::FileSystemOperationContext> context,
       const fileapi::FileSystemURL& url,
       bool exclusive,
       bool recursive,
       const StatusCallback& callback) OVERRIDE;
-  virtual bool GetFileInfo(
+  virtual void GetFileInfo(
       scoped_ptr<fileapi::FileSystemOperationContext> context,
       const fileapi::FileSystemURL& url,
       const GetFileInfoCallback& callback) OVERRIDE;
-  virtual bool ReadDirectory(
+  virtual void ReadDirectory(
       scoped_ptr<fileapi::FileSystemOperationContext> context,
       const fileapi::FileSystemURL& url,
       const ReadDirectoryCallback& callback) OVERRIDE;
-  virtual bool Touch(
+  virtual void Touch(
       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(
+  virtual void Truncate(
       scoped_ptr<fileapi::FileSystemOperationContext> context,
       const fileapi::FileSystemURL& url,
       int64 length,
       const StatusCallback& callback) OVERRIDE;
-  virtual bool CopyFileLocal(
+  virtual void CopyFileLocal(
       scoped_ptr<fileapi::FileSystemOperationContext> context,
       const fileapi::FileSystemURL& src_url,
       const fileapi::FileSystemURL& dest_url,
       const StatusCallback& callback) OVERRIDE;
-  virtual bool MoveFileLocal(
+  virtual void MoveFileLocal(
       scoped_ptr<fileapi::FileSystemOperationContext> context,
       const fileapi::FileSystemURL& src_url,
       const fileapi::FileSystemURL& dest_url,
       const StatusCallback& callback) OVERRIDE;
-  virtual bool CopyInForeignFile(
+  virtual void CopyInForeignFile(
       scoped_ptr<fileapi::FileSystemOperationContext> context,
       const base::FilePath& src_file_path,
       const fileapi::FileSystemURL& dest_url,
       const StatusCallback& callback) OVERRIDE;
-  virtual bool DeleteFile(
+  virtual void DeleteFile(
       scoped_ptr<fileapi::FileSystemOperationContext> context,
       const fileapi::FileSystemURL& url,
       const StatusCallback& callback) OVERRIDE;
-  virtual bool DeleteDirectory(
+  virtual void DeleteDirectory(
       scoped_ptr<fileapi::FileSystemOperationContext> context,
       const fileapi::FileSystemURL& url,
       const StatusCallback& callback) OVERRIDE;
-  virtual bool DeleteRecursively(
+  virtual void DeleteRecursively(
       scoped_ptr<fileapi::FileSystemOperationContext> context,
       const fileapi::FileSystemURL& url,
       const StatusCallback& callback) OVERRIDE;
-  virtual bool CreateSnapshotFile(
+  virtual void CreateSnapshotFile(
       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
@@ skipping 74 matching lines @@
 
   // 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_