Collect type profile for DevTools.

src/compiler/js-operator.cc

Index: src/compiler/js-operator.cc
diff --git a/src/compiler/js-operator.cc b/src/compiler/js-operator.cc
index 44a47d91e83f83dc40a158d73e8daacc5bb0dd48..5004841d4a9e5ba1e990f5fa63314f549543eacf 100644
--- a/src/compiler/js-operator.cc
+++ b/src/compiler/js-operator.cc
@@ -292,7 +292,8 @@ std::ostream& operator<<(std::ostream& os, FeedbackParameter const& p) {
 }
 
 FeedbackParameter const& FeedbackParameterOf(const Operator* op) {
-  DCHECK(op->opcode() == IrOpcode::kJSStoreDataPropertyInLiteral);
+  DCHECK(op->opcode() == IrOpcode::kJSStoreDataPropertyInLiteral ||
+         op->opcode() == IrOpcode::kJSCollectTypeProfile);
   return OpParameter<FeedbackParameter>(op);
 }
 
@@ -703,6 +704,17 @@ const Operator* JSOperatorBuilder::StoreDataPropertyInLiteral(
       parameters);                     // parameter
 }
 
+const Operator* JSOperatorBuilder::CollectTypeProfile(
+    const VectorSlotPair& feedback) {
+  FeedbackParameter parameters(feedback);
+  return new (zone()) Operator1<FeedbackParameter>(  // --
+      IrOpcode::kJSCollectTypeProfile,
+      Operator::kNoThrow,      // opcode
+      "JSCollectTypeProfile",  // name
+      2, 1, 1, 0, 1, 0,        // counts
+      parameters);             // parameter
+}
+
 const Operator* JSOperatorBuilder::ToBoolean(ToBooleanHints hints) {
   // TODO(turbofan): Cache most important versions of this operator.
   return new (zone()) Operator1<ToBooleanHints>(  //--