Implement GetOrigins for indexeddb quota

content/browser/in_process_webkit/indexed_db_context.h

Index: content/browser/in_process_webkit/indexed_db_context.h
diff --git a/content/browser/in_process_webkit/indexed_db_context.h b/content/browser/in_process_webkit/indexed_db_context.h
index bda724032e395a0cd709cf7ce686a92f08c733d8..7e7f5617bd4e05e7c133ff2e9bc1a39b150c438c 100644
--- a/content/browser/in_process_webkit/indexed_db_context.h
+++ b/content/browser/in_process_webkit/indexed_db_context.h
@@ -62,6 +62,8 @@ class IndexedDBContext : public base::RefCountedThreadSafe<IndexedDBContext> {
   // Does a particular origin get unlimited storage?
   bool IsUnlimitedStorageGranted(const GURL& origin) const;
 
+  void GetAllOriginIdentifiers(std::vector<string16>* origin_ids);
+
 #ifdef UNIT_TEST
   // For unit tests allow to override the |data_path_|.
   void set_data_path(const FilePath& data_path) { data_path_ = data_path; }