This adds some GData private API to the file manager

chrome/browser/chromeos/extensions/file_browser_private_api.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 CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_BROWSER_PRIVATE_API_H_
 #define CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_BROWSER_PRIVATE_API_H_
 #pragma once
 
 #include <map>
 #include <string>
@@ skipping 349 matching lines @@
  protected:
   virtual ~FileDialogStringsFunction() {}
 
   // SyncExtensionFunction overrides.
   virtual bool RunImpl() OVERRIDE;
 
  private:
   DECLARE_EXTENSION_FUNCTION_NAME("fileBrowserPrivate.getStrings");
 };
 
+// Retrieve property information for multiple files, returning a list of the
+// same length as the input list of file URLs.  If a particular file isn't
+// found, then return a dictionary with the key "error" set to the string
+// "NOT_FOUND" for that entry in the returned list.  If an entry is a directory
+// instead of a file, then an empty attribute dictionary is returned at that
+// position in the list.
+class GetGDataFilePropertiesFunction
+    : public FileBrowserFunction {
+ public:
+  GetGDataFilePropertiesFunction();
+
+ protected:
+  virtual ~GetGDataFilePropertiesFunction();
+
+  // AsyncExtensionFunction overrides.
+  virtual bool RunImpl() OVERRIDE;
+
+ private:
+  // A callback method to handle the result of
+  // GetLocalPathsOnFileThreadAndRunCallbackOnUIThread.
+  void GetLocalPathsResponseOnUIThread(const FilePathList& files);
+
+  DECLARE_EXTENSION_FUNCTION_NAME("fileBrowserPrivate.getGDataFileProperties");
+};
 #endif  // CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_BROWSER_PRIVATE_API_H_