Moving file_system_proxy to base/ and changing it to work with MessageLoopProxies instead of ChromeThreads.

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/3131026

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@56923 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 64 insertions, 0 deletions

diff --git a/base/file_util_proxy.h b/base/file_util_proxy.h
new file mode 100644
index 0000000..cd6b158
--- /dev/null
+++ b/base/file_util_proxy.h
@@ -0,0 +1,64 @@
+// Copyright (c) 2010 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 BASE_FILE_SYSTEM_PROXY_H_
+#define BASE_FILE_SYSTEM_PROXY_H_
+
+#include "base/callback.h"
+#include "base/platform_file.h"
+#include "base/ref_counted.h"
+#include "base/tracked_objects.h"
+
+namespace base {
+
+class MessageLoopProxy;
+
+// This class provides asynchronous access to common file routines.
+class FileUtilProxy {
+ public:
+  // This callback is used by methods that report success with a bool.  It is
+  // valid to pass NULL as the callback parameter to any function that takes a
+  // StatusCallback, in which case the operation will complete silently.
+  typedef Callback1<bool /* succeeded */>::Type StatusCallback;
+
+  // Creates or opens a file with the given flags.  It is invalid to pass NULL
+  // for the callback.
+  typedef Callback2<base::PassPlatformFile, bool /* created */>::Type
+      CreateOrOpenCallback;
+  static void CreateOrOpen(scoped_refptr<MessageLoopProxy> message_loop_proxy,
+                           const FilePath& file_path,
+                           int file_flags,
+                           CreateOrOpenCallback* callback);
+
+  // Creates a temporary file for writing.  The path and an open file handle
+  // are returned.  It is invalid to pass NULL for the callback.
+  typedef Callback2<base::PassPlatformFile, FilePath>::Type
+      CreateTemporaryCallback;
+  static void CreateTemporary(
+      scoped_refptr<MessageLoopProxy> message_loop_proxy,
+      CreateTemporaryCallback* callback);
+
+  // Close the given file handle.
+  static void Close(scoped_refptr<MessageLoopProxy> message_loop_proxy,
+                    base::PlatformFile,
+                    StatusCallback* callback);
+
+  // Deletes a file or empty directory.
+  static void Delete(scoped_refptr<MessageLoopProxy> message_loop_proxy,
+                     const FilePath& file_path,
+                     StatusCallback* callback);
+
+  // Deletes a directory and all of its contents.
+  static void RecursiveDelete(
+      scoped_refptr<MessageLoopProxy> message_loop_proxy,
+      const FilePath& file_path,
+      StatusCallback* callback);
+
+ private:
+  DISALLOW_IMPLICIT_CONSTRUCTORS(FileUtilProxy);
+};
+
+} // namespace base
+
+#endif  // BASE_FILE_SYSTEM_PROXY_H_