Vector ICs: Adapting store ic classes for vectors.

src/type-feedback-vector.h

Index: src/type-feedback-vector.h
diff --git a/src/type-feedback-vector.h b/src/type-feedback-vector.h
index cbba89339a305d30ff050fecd57bb78732102e31..2118a088f4d18badb894d0e67941f3aa4c61c445 100644
--- a/src/type-feedback-vector.h
+++ b/src/type-feedback-vector.h
@@ -407,6 +407,10 @@ class KeyedStoreICNexus : public FeedbackNexus {
       : FeedbackNexus(vector, slot) {
     DCHECK(vector->GetKind(slot) == Code::KEYED_STORE_IC);
   }
+  explicit KeyedStoreICNexus(Isolate* isolate)
+      : FeedbackNexus(TypeFeedbackVector::DummyVector(isolate),
+                      TypeFeedbackVector::DummySlot(
+                          TypeFeedbackVector::kDummyKeyedStoreICSlot)) {}
   KeyedStoreICNexus(TypeFeedbackVector* vector, FeedbackVectorICSlot slot)
       : FeedbackNexus(vector, slot) {
     DCHECK(vector->GetKind(slot) == Code::KEYED_STORE_IC);