gdata: Add ability to fetch documents in a particular directory

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 5f02db954a1e4804bd056b64605e0e410e229e8c..9ed98e96de87a8b013114796df4bfd67f554aa09 100644
--- a/chrome/browser/chromeos/gdata/gdata_file_system.h
+++ b/chrome/browser/chromeos/gdata/gdata_file_system.h
@@ -594,6 +594,7 @@ class GDataFileSystem : public GDataFileSystemInterface,
                        bool should_fetch_multiple_feeds,
                        const FilePath& search_file_path,
                        const std::string& search_query,
+                       const std::string& directory_resource_id,
                        const FindEntryCallback& callback);
     ~GetDocumentsParams();
 
@@ -609,6 +610,7 @@ class GDataFileSystem : public GDataFileSystemInterface,
     bool should_fetch_multiple_feeds;
     FilePath search_file_path;
     std::string search_query;
+    std::string directory_resource_id;
     FindEntryCallback callback;
   };
 
@@ -943,6 +945,7 @@ class GDataFileSystem : public GDataFileSystemInterface,
                           bool should_fetch_multiple_feeds,
                           const FilePath& search_file_path,
                           const std::string& search_query,
+                          const std::string& directory_resource_id,
                           const FindEntryCallback& entry_found_callback,
                           const LoadDocumentFeedCallback& load_feed_callback);