[inspector] implemented blackboxing inside v8

src/objects.cc

Index: src/objects.cc
diff --git a/src/objects.cc b/src/objects.cc
index e52f47657be249c4932d27ac6bee653c934a9a31..356b6ba09cef00c728d06f8933cd94b95a53fdec 100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -13402,6 +13402,15 @@ String* SharedFunctionInfo::DebugName() {
   return String::cast(n);
 }
 
+bool SharedFunctionInfo::DebugIsBlackboxed() {
+  if (!computed_debug_is_blackboxed()) {
+    Handle<SharedFunctionInfo> info(this);
+    set_debug_is_blackboxed(info->GetIsolate()->debug()->IsBlackboxed(info));
+    set_computed_debug_is_blackboxed(true);
+  }
+  return debug_is_blackboxed();
+}
+
 bool SharedFunctionInfo::HasNoSideEffect() {
   if (!computed_has_no_side_effect()) {
     DisallowHeapAllocation not_handlified;