Cleanup IndexedDBIO unit tests using GoogleMock.

content/browser/indexed_db/indexed_db_backing_store.h

Index: content/browser/indexed_db/indexed_db_backing_store.h
diff --git a/content/browser/indexed_db/indexed_db_backing_store.h b/content/browser/indexed_db/indexed_db_backing_store.h
index 993d53d12722a4cd266bea7eb511ab353cbf96aa..1af120497714fb726c34e11cc7755cb74122ad38 100644
--- a/content/browser/indexed_db/indexed_db_backing_store.h
+++ b/content/browser/indexed_db/indexed_db_backing_store.h
@@ -50,18 +50,9 @@ namespace content {
 class IndexedDBFactory;
 class LevelDBComparator;
 class LevelDBDatabase;
+class LevelDBFactory;
 struct IndexedDBValue;
 
-class LevelDBFactory {
- public:
-  virtual ~LevelDBFactory() {}
-  virtual leveldb::Status OpenLevelDB(const base::FilePath& file_name,
-                                      const LevelDBComparator* comparator,
-                                      scoped_ptr<LevelDBDatabase>* db,
-                                      bool* is_disk_full) = 0;
-  virtual leveldb::Status DestroyLevelDB(const base::FilePath& file_name) = 0;
-};
-
 class CONTENT_EXPORT IndexedDBBackingStore
     : public base::RefCounted<IndexedDBBackingStore> {
  public: