[cleanup] Remove unused function Isolate::GetMessageLocation

Bug: v8:8834
Change-Id: Ief3c02a05252d3e234e524e9fa3582280f70ae22
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1569439
Auto-Submit: Dan Elphick <delphick@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60877}

src/isolate.cc

@@ -2354,23 +2354,6 @@ void Isolate::ReportPendingMessagesFromJavaScript() {
   ReportPendingMessagesImpl(true);
 }
 
-MessageLocation Isolate::GetMessageLocation() {
-  DCHECK(has_pending_exception());
-
-  if (thread_local_top()->pending_exception_ !=
-          ReadOnlyRoots(heap()).termination_exception() &&
-      !thread_local_top()->pending_message_obj_->IsTheHole(this)) {
-    Handle<JSMessageObject> message_obj(
-        JSMessageObject::cast(thread_local_top()->pending_message_obj_), this);
-    Handle<Script> script(message_obj->script(), this);
-    int start_pos = message_obj->start_position();
-    int end_pos = message_obj->end_position();
-    return MessageLocation(script, start_pos, end_pos);
-  }
-
-  return MessageLocation();
-}
-
 bool Isolate::OptionalRescheduleException(bool clear_exception) {
   DCHECK(has_pending_exception());
   PropagatePendingExceptionToExternalTryCatch();

src/isolate.h

@@ -776,9 +776,6 @@ class Isolate final : private HiddenFactory {
   // Implements code shared between the two above methods
   void ReportPendingMessagesImpl(bool report_externally);
 
-  // Return pending location if any or unfilled structure.
-  MessageLocation GetMessageLocation();
-
   // Promote a scheduled exception to pending. Asserts has_scheduled_exception.
   Object PromoteScheduledException();