Collect type profile for DevTools.

src/ast/ast.cc

Index: src/ast/ast.cc
diff --git a/src/ast/ast.cc b/src/ast/ast.cc
index 5b98e3165447f69f292b898139d85d8ab5161b6c..09aa646df6d21a4c2a61c32e5dd5cf6e33de558c 100644
--- a/src/ast/ast.cc
+++ b/src/ast/ast.cc
@@ -283,8 +283,15 @@ Assignment::Assignment(Token::Value op, Expression* target, Expression* value,
 
 void Assignment::AssignFeedbackSlots(FeedbackVectorSpec* spec,
                                      LanguageMode language_mode,
-                                     FeedbackSlotCache* cache) {
+                                     FeedbackSlotCache* cache,
+                                     bool collect_type_profile) {
   AssignVectorSlots(target(), spec, language_mode, &slot_);
+
+  bit_field_ =
+      CollectTypeProfileSlotField::update(bit_field_, collect_type_profile);
+  if (HasCollectTypeProfileSlot()) {
+    collect_type_profile_slot_ = spec->AddTypeProfileSlot();
+  }
 }
 
 void CountOperation::AssignFeedbackSlots(FeedbackVectorSpec* spec,