Revert 138055 - gdata: Add requestDirectoryRefresh to file_browser_private.

chrome/browser/chromeos/gdata/gdata_files.h

Index: chrome/browser/chromeos/gdata/gdata_files.h
===================================================================
--- chrome/browser/chromeos/gdata/gdata_files.h	(revision 138055)
+++ chrome/browser/chromeos/gdata/gdata_files.h	(working copy)
@@ -336,10 +336,8 @@
   // Removes the entry from its children list and destroys the entry instance.
   bool RemoveEntry(GDataEntry* entry);
 
-  // Removes child elements.
+  // Removes children elements.
   void RemoveChildren();
-  void RemoveChildFiles();
-  void RemoveChildDirectories();
 
   // Last refresh time.
   const base::Time& refresh_time() const { return refresh_time_; }