drive: Stop returning FilePath from GetResourceEntryById

chrome/browser/chromeos/drive/change_list_processor.cc

 // 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.
 
 #include "chrome/browser/chromeos/drive/change_list_processor.h"
 
 #include "base/metrics/histogram.h"
 #include "chrome/browser/chromeos/drive/drive.pb.h"
 #include "chrome/browser/chromeos/drive/file_system_util.h"
 #include "chrome/browser/chromeos/drive/resource_entry_conversion.h"
@@ skipping 145 matching lines @@
     for (size_t i = 0; i < entries.size(); ++i) {
       ResourceEntryMap::iterator it = entries[i];
       ApplyEntry(it->second);
       entry_map_.erase(it);
     }
   }
 }
 
 void ChangeListProcessor::ApplyEntry(const ResourceEntry& entry) {
   // Lookup the entry.
-  FileError error =
-      resource_metadata_->GetResourceEntryById(entry.resource_id(), NULL, NULL);
+  ResourceEntry existing_entry;
+  FileError error = resource_metadata_->GetResourceEntryById(
+      entry.resource_id(), &existing_entry);
 
   if (error == FILE_ERROR_OK) {
     if (entry.deleted()) {
       // Deleted file/directory.
       RemoveEntry(entry);
     } else {
       // Entry exists and needs to be refreshed.
       RefreshEntry(entry);
     }
   } else if (error == FILE_ERROR_NOT_FOUND && !entry.deleted()) {
@@ skipping 120 matching lines @@
   // The changestamp should always be updated.
   root.mutable_directory_specific_info()->set_changestamp(largest_changestamp);
 
   error = resource_metadata_->RefreshEntry(root, NULL, NULL);
 
   LOG_IF(WARNING, error != FILE_ERROR_OK) << "Failed to refresh root directory";
 }
 
 }  // namespace internal
 }  // namespace drive