Adding FileUtil::CreateSnapshotFile

webkit/fileapi/file_system_file_util_proxy.h

 // Copyright (c) 2012 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_FILE_UTIL_PROXY_H_
 #define WEBKIT_FILEAPI_FILE_SYSTEM_FILE_UTIL_PROXY_H_
 
 #include <vector>
 
 #include "base/callback.h"
 #include "base/file_path.h"
 #include "base/file_util_proxy.h"
 #include "base/memory/ref_counted.h"
 #include "base/platform_file.h"
 #include "base/tracked_objects.h"
+#include "webkit/fileapi/file_system_operation_interface.h"
 
 namespace fileapi {
 
 using base::PlatformFile;
 using base::PlatformFileError;
 using base::PlatformFileInfo;
 
 class FileSystemFileUtil;
 class FileSystemOperationContext;
 class FileSystemURL;
 
 // This class provides asynchronous access to FileSystemFileUtil methods for
 // FileSystem API operations.  This also implements cross-FileUtil copy/move
 // operations on top of FileSystemFileUtil methods.
 class FileSystemFileUtilProxy {
  public:
   // Some of the proxy routines are just wrapping around the FileUtilProxy's
   // relay methods, so we use the same types as FileUtilProxy for them.
   typedef base::FileUtilProxy::Entry Entry;
   typedef base::FileUtilProxy::CreateOrOpenCallback CreateOrOpenCallback;
 
   typedef base::Callback<void(PlatformFileError status)> StatusCallback;
   typedef base::Callback<void(PlatformFileError status,
                               bool created)> EnsureFileExistsCallback;
-  typedef base::Callback<void(PlatformFileError status,
-                              const PlatformFileInfo& info,
-                              const FilePath& platform_path)>
-      GetFileInfoCallback;
-  typedef base::Callback<void(PlatformFileError,
-                              const std::vector<Entry>&,
-                              bool has_more)> ReadDirectoryCallback;
+  typedef FileSystemOperationInterface::GetMetadataCallback GetFileInfoCallback;
+  typedef FileSystemOperationInterface::SnapshotFileCallback
+      SnapshotFileCallback;
+  typedef FileSystemOperationInterface::ReadDirectoryCallback
+      ReadDirectoryCallback;
 
   // Deletes a file or a directory on the given context's file_task_runner.
   // It is an error to delete a non-empty directory with recursive=false.
   static bool Delete(
       FileSystemOperationContext* context,
       FileSystemFileUtil* file_util,
       const FileSystemURL& url,
       bool recursive,
       const StatusCallback& callback);
 
@@ skipping 61 matching lines @@
       const StatusCallback& callback);
 
   // Retrieves the information about a file by calling |file_util|'s
   // GetFileInfo method on the given context's file_task_runner.
   static bool GetFileInfo(
       FileSystemOperationContext* context,
       FileSystemFileUtil* file_util,
       const FileSystemURL& url,
       const GetFileInfoCallback& callback);
 
+  // Creates a snapshot file by calling |file_util|'s CreateSnapshotFile
+  // method on the given context's file_task_runner.
+  static bool CreateSnapshotFile(
+      FileSystemOperationContext* context,
+      FileSystemFileUtil* file_util,
+      const FileSystemURL& url,
+      const SnapshotFileCallback& callback);
+
   // Reads the filenames in |url| by calling |file_util|'s
   // ReadDirectory method on the given context's file_task_runner.
   // TODO: this should support returning entries in multiple chunks.
   static bool ReadDirectory(
       FileSystemOperationContext* context,
       FileSystemFileUtil* file_util,
       const FileSystemURL& url,
       const ReadDirectoryCallback& callback);
 
   // Touches a file by calling |file_util|'s Touch method
@@ skipping 15 matching lines @@
       int64 length,
       const StatusCallback& callback);
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(FileSystemFileUtilProxy);
 };
 
 }  // namespace fileapi
 
 #endif  // WEBKIT_FILEAPI_FILE_SYSTEM_FILE_UTIL_PROXY_H_