Sqlite: Add blob support

Change-Id: Ic2ec5f20c8585241b9e9aaa8465e70b6ab4f004c
Reviewed-by: Thomas Hartmann <thomas.hartmann@qt.io>

tests/unit/unittest/google-using-declarations.h

@@ -58,6 +58,7 @@ using testing::Ne;
 using testing::NiceMock;
 using testing::Not;
 using testing::NotNull;
+using testing::Optional;
 using testing::Pair;
 using testing::PrintToString;
 using testing::Property;