Add inspection of function for optimized frames

src/deoptimizer.cc

Index: src/deoptimizer.cc
diff --git a/src/deoptimizer.cc b/src/deoptimizer.cc
index e8c659718f769a6ec5d2dd6129b2b4bb0ad7c16c..1151449eadb9277165f31d50eb550b75c22f806e 100644
--- a/src/deoptimizer.cc
+++ b/src/deoptimizer.cc
@@ -1415,6 +1415,7 @@ void SlotRef::ComputeSlotMappingForArguments(JavaScriptFrame* frame,
 DeoptimizedFrameInfo::DeoptimizedFrameInfo(
     Deoptimizer* deoptimizer, int frame_index) {
   FrameDescription* output_frame = deoptimizer->output_[frame_index];
+  SetFunction(output_frame->GetFunction());
   expression_count_ = output_frame->GetExpressionCount(deoptimizer);
   expression_stack_ = new Object*[expression_count_];
   for (int i = 0; i < expression_count_; i++) {
@@ -1428,6 +1429,7 @@ DeoptimizedFrameInfo::~DeoptimizedFrameInfo() {
 }
 
 void DeoptimizedFrameInfo::Iterate(ObjectVisitor* v) {
+  v->VisitPointer(reinterpret_cast<Object**>(&function_));
   v->VisitPointers(expression_stack_, expression_stack_ + expression_count_);
 }