gdata: Add ability to fetch documents in a particular directory

chrome/browser/chromeos/gdata/mock_gdata_documents_service.cc

Index: chrome/browser/chromeos/gdata/mock_gdata_documents_service.cc
diff --git a/chrome/browser/chromeos/gdata/mock_gdata_documents_service.cc b/chrome/browser/chromeos/gdata/mock_gdata_documents_service.cc
index e63c1e702b09952dfd69cf0ac562c4c425e59c85..4879da35b40a772fd2a7cb311243c04881123853 100644
--- a/chrome/browser/chromeos/gdata/mock_gdata_documents_service.cc
+++ b/chrome/browser/chromeos/gdata/mock_gdata_documents_service.cc
@@ -44,7 +44,7 @@ static Value* LoadJSONFile(const std::string& filename) {
 MockDocumentsService::MockDocumentsService() {
   ON_CALL(*this, Authenticate(_))
       .WillByDefault(Invoke(this, &MockDocumentsService::AuthenticateStub));
-  ON_CALL(*this, GetDocuments(_, _, _, _))
+  ON_CALL(*this, GetDocuments(_, _, _, _, _))
       .WillByDefault(Invoke(this, &MockDocumentsService::GetDocumentsStub));
   ON_CALL(*this, GetAccountMetadata(_))
       .WillByDefault(Invoke(this,
@@ -88,6 +88,7 @@ void MockDocumentsService::GetDocumentsStub(
     const GURL& feed_url,
     int start_changestamp,
     const std::string& search_string,
+    const std::string& directory_resource_id,
     const GetDataCallback& callback) {
   if (search_string.empty()) {
     base::MessageLoopProxy::current()->PostTask(