gdata: Add ability to fetch documents in a particular directory

chrome/browser/chromeos/gdata/gdata_documents_service.cc

Index: chrome/browser/chromeos/gdata/gdata_documents_service.cc
diff --git a/chrome/browser/chromeos/gdata/gdata_documents_service.cc b/chrome/browser/chromeos/gdata/gdata_documents_service.cc
index 41c2bced92c6eb07d32c322f9b4f22f9ef74d8cd..d7f0765f277b1307333b551f6b26baabd687ecc8 100644
--- a/chrome/browser/chromeos/gdata/gdata_documents_service.cc
+++ b/chrome/browser/chromeos/gdata/gdata_documents_service.cc
@@ -103,6 +103,7 @@ void DocumentsService::Authenticate(const AuthStatusCallback& callback) {
 void DocumentsService::GetDocuments(const GURL& url,
                                     int start_changestamp,
                                     const std::string& search_query,
+                                    const std::string& directory_resource_id,
                                     const GetDataCallback& callback) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
@@ -111,6 +112,7 @@ void DocumentsService::GetDocuments(const GURL& url,
                                 profile_,
                                 start_changestamp,
                                 search_query,
+                                directory_resource_id,
                                 callback);
   if (!url.is_empty())
     operation->SetUrl(url);