gdata: Remove hide_hosted_documents from ReadDirectoryCallback

chrome/browser/chromeos/gdata/gdata_file_system.h

Index: chrome/browser/chromeos/gdata/gdata_file_system.h
diff --git a/chrome/browser/chromeos/gdata/gdata_file_system.h b/chrome/browser/chromeos/gdata/gdata_file_system.h
index bc3d247ff570c0eba4df6cd917542b10ede1e11b..ca248a5c291a2e28b15a7234fa61b96eddc4061b 100644
--- a/chrome/browser/chromeos/gdata/gdata_file_system.h
+++ b/chrome/browser/chromeos/gdata/gdata_file_system.h
@@ -600,9 +600,6 @@ class GDataFileSystem : public GDataFileSystemInterface,
   void FindEntryByPathSyncOnUIThread(const FilePath& search_file_path,
                                      const FindEntryCallback& callback);
 
-  // Changes state of hosted documents visibility, triggers directory refresh.
-  void SetHideHostedDocuments(bool hide);
-
   // Initializes preference change observer.
   void InitializePreferenceObserver();
 
@@ -797,9 +794,6 @@ class GDataFileSystem : public GDataFileSystemInterface,
   // Periodic timer for checking updates.
   base::Timer update_timer_;
 
-  // True if hosted documents should be hidden.
-  bool hide_hosted_docs_;
-
   // The set of paths opened by OpenFile but not yet closed by CloseFile.
   std::set<FilePath> open_files_;