[cleanup] Move ForEach vector feedback slots to ForInStatement

src/ast/ast.cc

Index: src/ast/ast.cc
diff --git a/src/ast/ast.cc b/src/ast/ast.cc
index 003e44e28487980436db3ed1a6d26fa2d4d60ecc..052c83ca85fb81df417a36944f51bf4e4658d100 100644
--- a/src/ast/ast.cc
+++ b/src/ast/ast.cc
@@ -148,15 +148,11 @@ static void AssignVectorSlots(Expression* expr, FeedbackVectorSpec* spec,
   }
 }
 
-
-void ForEachStatement::AssignFeedbackVectorSlots(
-    Isolate* isolate, FeedbackVectorSpec* spec,
-    FeedbackVectorSlotCache* cache) {
-  // TODO(adamk): for-of statements do not make use of this feedback slot.
-  // The each_slot_ should be specific to ForInStatement, and this work moved
-  // there.
-  if (IsForOfStatement()) return;
+void ForInStatement::AssignFeedbackVectorSlots(Isolate* isolate,
+                                               FeedbackVectorSpec* spec,
+                                               FeedbackVectorSlotCache* cache) {
   AssignVectorSlots(each(), spec, &each_slot_);
+  for_in_feedback_slot_ = spec->AddGeneralSlot();
 }