When rethrowing an exception, print the stack trace of its original site instead of rethrow site.

src/isolate.h

Index: src/isolate.h
diff --git a/src/isolate.h b/src/isolate.h
index 0e59903454a043844f36045cacdd514b7f03d6f7..64c251cd8b2b33566a6219f3ba75da61d9240f86 100644
--- a/src/isolate.h
+++ b/src/isolate.h
@@ -703,6 +703,8 @@ class Isolate {
       int frame_limit,
       StackTrace::StackTraceOptions options);
 
+  void CaptureAndSetCurrentStackTraceFor(Handle<Object> error_object);
+
   // Returns if the top context may access the given global object. If
   // the result is false, the pending exception is guaranteed to be
   // set.
@@ -1141,6 +1143,10 @@ class Isolate {
 
   void InitializeDebugger();
 
+  // Traverse prototype chain to find out whether the object is derived from
+  // the Error object.
+  bool IsErrorObject(Handle<Object> obj);
+
   int stack_trace_nesting_level_;
   StringStream* incomplete_message_;
   // The preallocated memory thread singleton.