Mark exception handlers if they have a stacktrace specified. Do not build a stacktrace if the handl…

runtime/vm/flow_graph_compiler.h

Index: runtime/vm/flow_graph_compiler.h
===================================================================
--- runtime/vm/flow_graph_compiler.h	(revision 26815)
+++ runtime/vm/flow_graph_compiler.h	(working copy)
@@ -401,7 +401,8 @@
   void AddExceptionHandler(intptr_t try_index,
                            intptr_t outer_try_index,
                            intptr_t pc_offset,
-                           const Array& handler_types);
+                           const Array& handler_types,
+                           bool needs_stacktrace);
   void AddCurrentDescriptor(PcDescriptors::Kind kind,
                             intptr_t deopt_id,
                             intptr_t token_pos);