[inspector] store stack frame in struct instead of JSObject

src/objects-printer.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/objects.h"
 
 #include <iomanip>
 #include <memory>
 
 #include "src/bootstrapper.h"
@@ skipping 1454 matching lines @@
 }
 
 
 void BreakPointInfo::BreakPointInfoPrint(std::ostream& os) {  // NOLINT
   HeapObject::PrintHeader(os, "BreakPointInfo");
   os << "\n - source_position: " << source_position();
   os << "\n - break_point_objects: " << Brief(break_point_objects());
   os << "\n";
 }
 
+void StackFrameInfo::StackFrameInfoPrint(std::ostream& os) {  // NOLINT
+  HeapObject::PrintHeader(os, "StackFrame");
+  os << "\n - line_number: " << line_number();
+  os << "\n - column_number: " << column_number();
+  os << "\n - script_id: " << script_id();
+  os << "\n - script_name: " << Brief(script_name());
+  os << "\n - script_name_or_source_url: "
+     << Brief(script_name_or_source_url());
+  os << "\n - function_name: " << Brief(function_name());
+  os << "\n - is_eval: " << (is_eval() ? "true" : "false");
+  os << "\n - is_constructor: " << (is_constructor() ? "true" : "false");
+  os << "\n";
+}
 
 static void PrintBitMask(std::ostream& os, uint32_t value) {  // NOLINT
   for (int i = 0; i < 32; i++) {
     if ((i & 7) == 0) os << " ";
     os << (((value & 1) == 0) ? "_" : "x");
     value >>= 1;
   }
 }
 
 
@@ skipping 245 matching lines @@
     printf("Not a transition array\n");
   } else {
     reinterpret_cast<i::TransitionArray*>(object)->Print();
   }
 }
 
 extern void _v8_internal_Print_StackTrace() {
   i::Isolate* isolate = i::Isolate::Current();
   isolate->PrintStack(stdout);
 }