Show user script source line that caused exception intead of a line in a nati...

src/frames.cc

Index: src/frames.cc
===================================================================
--- src/frames.cc	(revision 3748)
+++ src/frames.cc	(working copy)
@@ -176,7 +176,7 @@
 
 
 StackTraceFrameIterator::StackTraceFrameIterator() {
-  if (!done() && !frame()->function()->IsJSFunction()) Advance();
+  if (!done() && !IsValidFrame()) Advance();
 }
 
 
@@ -184,11 +184,19 @@
   while (true) {
     JavaScriptFrameIterator::Advance();
     if (done()) return;
-    if (frame()->function()->IsJSFunction()) return;
+    if (IsValidFrame()) return;
   }
 }
 
+bool StackTraceFrameIterator::IsValidFrame() {
+    if (!frame()->function()->IsJSFunction()) return false;
+    Object* script = JSFunction::cast(frame()->function())->shared()->script();
+    // Don't show functions from native scripts to user.
+    return (script->IsScript() &&
+            Script::TYPE_NATIVE != Script::cast(script)->type()->value());
+}
 
+
 // -------------------------------------------------------------------------