Make chrome.fileSystem.chooseEntry work on Google Drive directories.

chrome/browser/drive/fake_drive_service.cc

Index: chrome/browser/drive/fake_drive_service.cc
diff --git a/chrome/browser/drive/fake_drive_service.cc b/chrome/browser/drive/fake_drive_service.cc
index c7638950ba39c0c2139af539eb8c7cd9dc1bc2fe..ae0713ae32e78a93d384fb81cf2dbe201305c5da 100644
--- a/chrome/browser/drive/fake_drive_service.cc
+++ b/chrome/browser/drive/fake_drive_service.cc
@@ -781,8 +781,7 @@ CancelCallback FakeDriveService::CopyResource(
           resource_id == current_resource_id) {
         // Make a copy and set the new resource ID and the new title.
         scoped_ptr<base::DictionaryValue> copied_entry(entry->DeepCopy());
-        copied_entry->SetString("gd$resourceId.$t",
-                                resource_id + "_copied");

[kinaba, 2014/01/16 03:16:31]

This old code breaks test that copies the same file twice.

+        copied_entry->SetString("gd$resourceId.$t", GetNewResourceId());
         copied_entry->SetString("title.$t", new_title);
 
         // Reset parent directory.