datastore: Update AllocateIDs to take keys.

impl/dummy/dummy.go

Index: impl/dummy/dummy.go
diff --git a/impl/dummy/dummy.go b/impl/dummy/dummy.go
index 43ecbe50c49b8225a33db99b5469becb63b39fe4..b9001e426074a434ee0dc9add4eb35ee26808f4e 100644
--- a/impl/dummy/dummy.go
+++ b/impl/dummy/dummy.go
@@ -73,17 +73,12 @@ func ni() error {
 
 type ds struct{}
 
-func (ds) AllocateIDs(*datastore.Key, int) (int64, error) {
-	panic(ni())
-}
-func (ds) PutMulti([]*datastore.Key, []datastore.PropertyMap, datastore.PutMultiCB) error {
-	panic(ni())
-}
+func (ds) AllocateIDs([]*datastore.Key, datastore.PutMultiCB) error                       { panic(ni()) }
+func (ds) PutMulti([]*datastore.Key, []datastore.PropertyMap, datastore.PutMultiCB) error { panic(ni()) }
 func (ds) GetMulti([]*datastore.Key, datastore.MultiMetaGetter, datastore.GetMultiCB) error {
 	panic(ni())
 }
 func (ds) DeleteMulti([]*datastore.Key, datastore.DeleteMultiCB) error { panic(ni()) }
-func (ds) NewQuery(string) datastore.Query                             { panic(ni()) }
 func (ds) DecodeCursor(string) (datastore.Cursor, error)               { panic(ni()) }
 func (ds) Count(*datastore.FinalizedQuery) (int64, error)              { panic(ni()) }
 func (ds) Run(*datastore.FinalizedQuery, datastore.RawRunCB) error     { panic(ni()) }