Correctly annotate eval origin.

src/frames.cc

Index: src/frames.cc
diff --git a/src/frames.cc b/src/frames.cc
index d68339af193445d9c0a06082fae648e15b44370c..78859344e0408304f5bc107fa1803fd4d7b8be4a 100644
--- a/src/frames.cc
+++ b/src/frames.cc
@@ -977,6 +977,12 @@ FrameSummary::FrameSummary(Object* receiver, JSFunction* function,
          CannotDeoptFromAsmCode(Code::cast(abstract_code), function));
 }
 
+FrameSummary FrameSummary::GetFirst(JavaScriptFrame* frame) {
+  List<FrameSummary> frames(FLAG_max_inlining_levels + 1);
+  frame->Summarize(&frames);
+  return frames.first();
+}
+
 void FrameSummary::Print() {
   PrintF("receiver: ");
   receiver_->ShortPrint();
@@ -1228,15 +1234,15 @@ void InterpretedFrame::PatchBytecodeOffset(int new_offset) {
   SetExpression(index, Smi::FromInt(raw_offset));
 }
 
-Object* InterpretedFrame::GetBytecodeArray() const {
+BytecodeArray* InterpretedFrame::GetBytecodeArray() const {
   const int index = InterpreterFrameConstants::kBytecodeArrayExpressionIndex;
   DCHECK_EQ(
       InterpreterFrameConstants::kBytecodeArrayFromFp,
       InterpreterFrameConstants::kExpressionsOffset - index * kPointerSize);
-  return GetExpression(index);
+  return BytecodeArray::cast(GetExpression(index));
 }
 
-void InterpretedFrame::PatchBytecodeArray(Object* bytecode_array) {
+void InterpretedFrame::PatchBytecodeArray(BytecodeArray* bytecode_array) {
   const int index = InterpreterFrameConstants::kBytecodeArrayExpressionIndex;
   DCHECK_EQ(
       InterpreterFrameConstants::kBytecodeArrayFromFp,