Revert 61462 - Add truncate and cancel for FileWriter; write and more tests w...

base/file_util_proxy.h

 // 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_UTIL_PROXY_H_
 #define BASE_FILE_UTIL_PROXY_H_
 
 #include <vector>
 
 #include "base/callback.h"
@@ skipping 120 matching lines @@
   static bool Read(
       scoped_refptr<MessageLoopProxy> message_loop_proxy,
       base::PlatformFile file,
       int64 offset,
       char* buffer,
       int bytes_to_read,
       ReadWriteCallback* callback);
 
   // Writes to a file. If |offset| is greater than the length of the file,
   // |false| is returned. On success, the file pointer is moved to position
-  // |offset + bytes_to_write| in the file. The callback can be NULL.
+  // |offset + bytes_to_write| in the file. If The callback can be NULL.
   static bool Write(
       scoped_refptr<MessageLoopProxy> message_loop_proxy,
       base::PlatformFile file,
       int64 offset,
       const char* buffer,
       int bytes_to_write,
       ReadWriteCallback* callback);
 
   // Touches a file. The callback can be NULL.
   static bool Touch(
@@ skipping 10 matching lines @@
       const base::Time& last_access_time,
       const base::Time& last_modified_time,
       StatusCallback* callback);
 
   // Truncates a file to the given length. If |length| is greater than the
   // current length of the file, the file will be extended with zeroes.
   // The callback can be NULL.
   static bool Truncate(
       scoped_refptr<MessageLoopProxy> message_loop_proxy,
       base::PlatformFile file,
-      int64 length,
-      StatusCallback* callback);
-
-  // Truncates a file to the given length. If |length| is greater than the
-  // current length of the file, the file will be extended with zeroes.
-  // The callback can be NULL.
-  static bool Truncate(
-      scoped_refptr<MessageLoopProxy> message_loop_proxy,
-      const FilePath& path,
-      int64 length,
+      long long length,
       StatusCallback* callback);
 
   // Flushes a file. The callback can be NULL.
   static bool Flush(
       scoped_refptr<MessageLoopProxy> message_loop_proxy,
       base::PlatformFile file,
       StatusCallback* callback);
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(FileUtilProxy);
 };
 
 }  // namespace base
 
 #endif  // BASE_FILE_UTIL_PROXY_H_