Add gdata content search

chrome/browser/chromeos/gdata/mock_gdata_file_system.h

Index: chrome/browser/chromeos/gdata/mock_gdata_file_system.h
diff --git a/chrome/browser/chromeos/gdata/mock_gdata_file_system.h b/chrome/browser/chromeos/gdata/mock_gdata_file_system.h
index e4df317591a84ad697eff6c6e3081a4c819ac838..5836fd43ddd12041691b332c6ab2e848263480b1 100644
--- a/chrome/browser/chromeos/gdata/mock_gdata_file_system.h
+++ b/chrome/browser/chromeos/gdata/mock_gdata_file_system.h
@@ -24,6 +24,8 @@ class MockGDataFileSystem : public GDataFileSystemInterface {
   MOCK_METHOD1(Authenticate, void(const AuthStatusCallback& callback));
   MOCK_METHOD2(FindEntryByResourceIdSync, void(const std::string& resource_id,
                                                FindEntryDelegate* delegate));
+  MOCK_METHOD2(SearchContent, void(const std::string& search_query,
+                                   const ReadDirectoryCallback& callback));
   MOCK_METHOD3(TransferFile, void(const FilePath& local_file_path,
                                   const FilePath& remote_dest_file_path,
                                   const FileOperationCallback& callback));