child_files_ and child_directories_ have resource_ids instead of GDataFile* and GDataDirectory*.

chrome/browser/chromeos/gdata/gdata_directory_service.cc

Index: chrome/browser/chromeos/gdata/gdata_directory_service.cc
===================================================================
--- chrome/browser/chromeos/gdata/gdata_directory_service.cc	(revision 152309)
+++ chrome/browser/chromeos/gdata/gdata_directory_service.cc	(working copy)
@@ -300,7 +300,8 @@
   GDataDirectory* current_dir = root_.get();
 
   for (size_t i = 1; i < components.size() && current_dir; ++i) {
-    GDataEntry* entry = current_dir->FindChild(components[i]);
+    GDataEntry* entry =
+        GetEntryByResourceId(current_dir->FindChild(components[i]));

[satorux1, 2012/08/20 16:40:08]

looks a bit scary. Maybe:

const std::string resource_id = current_dir->FindChild(components[i]);
if (resource_id.empty())
  return NULL;
GDataEntry* entry = GetEntryByResourceId(resource_id);

[achuithb, 2012/08/20 21:14:57]

Done. I've added a DCHECK for entry instead of a runtime check.

     if (!entry)
       return NULL;