Pass parsed ChangeList to GDataFileSystem.

chrome/browser/chromeos/gdata/gdata_wapi_feed_loader.h

Index: chrome/browser/chromeos/gdata/gdata_wapi_feed_loader.h
diff --git a/chrome/browser/chromeos/gdata/gdata_wapi_feed_loader.h b/chrome/browser/chromeos/gdata/gdata_wapi_feed_loader.h
index 2b968572a86cd4c80b12f810a93c8d0542057184..db9719c17f6780a69023fdd5c6990323b531a27d 100644
--- a/chrome/browser/chromeos/gdata/gdata_wapi_feed_loader.h
+++ b/chrome/browser/chromeos/gdata/gdata_wapi_feed_loader.h
@@ -193,6 +193,15 @@ class GDataWapiFeedLoader {
       GDataErrorCode status,
       scoped_ptr<base::Value> data);
 
+  // Callback for handling response from |GDataDocumentsService::GetChanglist|.
+  // Invokes |callback| when done.
+  void OnGetChangelist(ContentOrigin initial_origin,
+                       const LoadDocumentFeedCallback& callback,
+                       GetDocumentsParams* params,
+                       base::TimeTicks start_time,
+                       GDataErrorCode status,
+                       scoped_ptr<base::Value> data);
+
   // Save filesystem to disk.
   void SaveFileSystem();