Update the number of fetched files more frequently.

chrome/browser/chromeos/gdata/gdata_file_system.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_GDATA_GDATA_FILE_SYSTEM_H_
 #define CHROME_BROWSER_CHROMEOS_GDATA_GDATA_FILE_SYSTEM_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 126 matching lines @@
     FOUND_INVALID,
     // Found missing directory segment while searching for given directory.
     FOUND_MISSING,
     // Found target directory, it already exists.
     DIRECTORY_ALREADY_PRESENT,
   };
 
   // Defines set of parameters sent to callback OnGetDocuments().
   struct GetDocumentsParams;
 
+  // Defines set of parameters sent to callback OnNotifyDocumentFeedFetched().
+  struct GetDocumentsUiState;
+
   // Defines set of parameters passes to intermediate callbacks during
   // execution of CreateDirectory() method.
   struct CreateDirectoryParams;
 
   // Defines set of parameters passed to an intermediate callback
   // OnGetFileCompleteForOpen, during execution of OpenFile() method.
   struct GetFileCompleteForOpenParams;
 
   // Defines set of parameters passed to intermediate callbacks during
   // execution of GetFileByPath() method.
@@ skipping 475 matching lines @@
   // Callback for handling root directory refresh from the cache.
   void OnProtoLoaded(LoadRootFeedParams* params);
 
   // Save filesystem as proto file.
   void SaveFileSystemAsProto();
 
   // Notifies events to observers on UI thread.
   void NotifyDirectoryChanged(const FilePath& directory_path);
   void NotifyDocumentFeedFetched(int num_accumulated_entries);
 
+  // Callback for handling UI updates caused by document fetching.
+  void OnNotifyDocumentFeedFetched(
+      base::WeakPtr<GetDocumentsUiState> ui_state);
+
   // Runs the callback and notifies that the initial load is finished.
   void RunAndNotifyInitialLoadFinished(
     const FindEntryCallback& callback,
     GDataFileError error,
     GDataEntry* entry);
 
   // Helper function that completes bookkeeping tasks related to
   // completed file transfer.
   void OnTransferCompleted(
       const FileOperationCallback& callback,
@@ skipping 257 matching lines @@
   base::WeakPtr<GDataFileSystem> ui_weak_ptr_;
 
   ObserverList<Observer> observers_;
 
   scoped_refptr<base::SequencedTaskRunner> blocking_task_runner_;
 };
 
 }  // namespace gdata
 
 #endif  // CHROME_BROWSER_CHROMEOS_GDATA_GDATA_FILE_SYSTEM_H_