A64: Synchronize with r19289.

src/isolate.cc

Index: src/isolate.cc
diff --git a/src/isolate.cc b/src/isolate.cc
index c168d12d083784bae611c265f19695adba7c26d4..8f3247f5ce00376e331d2bad596d56ca2252730b 100644
--- a/src/isolate.cc
+++ b/src/isolate.cc
@@ -946,6 +946,7 @@ Failure* Isolate::ReThrow(MaybeObject* exception) {
 
 
 Failure* Isolate::ThrowIllegalOperation() {
+  if (FLAG_stack_trace_on_illegal) PrintStack(stdout);
   return Throw(heap_.illegal_access_string());
 }
 
@@ -1122,8 +1123,6 @@ void Isolate::DoThrow(Object* exception, MessageLocation* location) {
     // while the bootstrapper is active since the infrastructure may not have
     // been properly initialized.
     if (!bootstrapping) {
-      Handle<String> stack_trace;
-      if (FLAG_trace_exception) stack_trace = StackTraceString();
       Handle<JSArray> stack_trace_object;
       if (capture_stack_trace_for_uncaught_exceptions_) {
         if (IsErrorObject(exception_handle)) {
@@ -1163,7 +1162,6 @@ void Isolate::DoThrow(Object* exception, MessageLocation* location) {
           "uncaught_exception",
           location,
           HandleVector<Object>(&exception_arg, 1),
-          stack_trace,
           stack_trace_object);
       thread_local_top()->pending_message_obj_ = *message_obj;
       if (location != NULL) {