Revert 76578 (accidental commit by the commit bot) - Add a function for usage tracking. It's based on the bug 6426001.

BUG=
TEST=

Review URL: http://codereview.chromium.org/6453001

TBR=dmikurube@google.com
Review URL: http://codereview.chromium.org/6588129

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@76594 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 0 insertions, 46 deletions

diff --git a/webkit/fileapi/file_system_usage_cache.h b/webkit/fileapi/file_system_usage_cache.h
deleted file mode 100644
index 32fc9b8..0000000
--- a/webkit/fileapi/file_system_usage_cache.h
+++ /dev/null
@@ -1,46 +0,0 @@
-// Copyright (c) 2011 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 WEBKIT_FILEAPI_FILE_SYSTEM_USAGE_CACHE_H_
-#define WEBKIT_FILEAPI_FILE_SYSTEM_USAGE_CACHE_H_
-
-#include "base/basictypes.h"
-#include "base/file_path.h"
-
-namespace fileapi {
-
-class FileSystemUsageCache {
- public:
-  // Gets the size described in the .usage file.
-  // Returns less than zero if the size is not availble.
-  static int64 GetUsage(const FilePath& usage_file_path);
-
-  // Increments or decrements the "dirty" entry in the .usage file.
-  // Returns false if no .usage is available.
-  static bool IncrementDirty(const FilePath& usage_file_path);
-  static bool DecrementDirty(const FilePath& usage_file_path);
-
-  // Updates the size described in the .usage file.
-  static int UpdateUsage(const FilePath& usage_file_path, int64 fs_usage);
-
-  static bool Exists(const FilePath& usage_file_path);
-  static bool Delete(const FilePath& usage_file_path);
-
-  static const char kUsageFileName[];
-  static const char kUsageFileHeader[];
-  static const int kUsageFileSize;
-  static const int kUsageFileHeaderSize;
-
- private:
-  // Read the size and the "dirty" entry described in the .usage file.
-  // Returns less than zero if no .usage file is available.
-  static int64 Read(const FilePath& usage_file_path, uint32* dirty);
-
-  static int Write(const FilePath& usage_file_path,
-                   uint32 dirty, int64 fs_usage);
-};
-
-}  // namespace fileapi
-
-#endif  // WEBKIT_FILEAPI_FILE_SYSTEM_USAGE_CACHE_H_