[inspector] introduced memory size limit for console message storage

src/api.cc

Index: src/api.cc
diff --git a/src/api.cc b/src/api.cc
index 4dab54b78bcd28e7c0283cc90b6cf3d184ce82aa..7c81839ae77dd95dded23d703b4f7aaecbf353c4 100644
--- a/src/api.cc
+++ b/src/api.cc
@@ -9361,6 +9361,15 @@ void debug::ResetBlackboxedStateCache(Isolate* v8_isolate,
   }
 }
 
+int debug::EstimatedValueSize(Isolate* v8_isolate, v8::Local<v8::Value> value) {
+  i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
+  ENTER_V8(isolate);
+  i::Handle<i::Object> object = Utils::OpenHandle(*value);
+  if (object->IsSmi()) return i::kPointerSize;
+  CHECK(object->IsHeapObject());
+  return i::Handle<i::HeapObject>::cast(object)->Size();
+}
+
 Local<String> CpuProfileNode::GetFunctionName() const {
   const i::ProfileNode* node = reinterpret_cast<const i::ProfileNode*>(this);
   i::Isolate* isolate = node->isolate();