Add isolate event handler setup in order to be able to propagate isolate

vm/debugger_api_impl.cc

Index: vm/debugger_api_impl.cc
===================================================================
--- vm/debugger_api_impl.cc	(revision 13083)
+++ vm/debugger_api_impl.cc	(working copy)
@@ -102,18 +102,17 @@
 
 DART_EXPORT void Dart_SetBreakpointHandler(
                      Dart_BreakpointHandler bp_handler) {
-  Isolate* isolate = Isolate::Current();
-  DARTSCOPE(isolate);
   BreakpointHandler* handler =
       reinterpret_cast<BreakpointHandler*>(bp_handler);
-
-  isolate->debugger()->SetBreakpointHandler(handler);
+  Debugger::SetBreakpointHandler(handler);
 }
 
 
 static Dart_BreakpointResolvedHandler* bp_resolved_handler = NULL;
 static Dart_ExceptionThrownHandler* exc_thrown_handler = NULL;
+static Dart_IsolateEventHandler* isolate_event_handler = NULL;
 
+
 static void DebuggerEventHandler(Debugger::DebuggerEvent* event) {
   Isolate* isolate = Isolate::Current();
   ASSERT(isolate != NULL);
@@ -133,6 +132,12 @@
     Dart_StackTrace trace =
         reinterpret_cast<Dart_StackTrace>(isolate->debugger()->StackTrace());
     (*exc_thrown_handler)(exception, trace);
+  } else if (event->type == Debugger::kIsolateCreated) {
+    (*isolate_event_handler)(Api::CastIsolate(event->isolate), kCreated);
+  } else if (event->type == Debugger::kIsolateInterrupted) {
+    (*isolate_event_handler)(Api::CastIsolate(event->isolate), kInterrupted);
+  } else if (event->type == Debugger::kIsolateShutdown) {
+    (*isolate_event_handler)(Api::CastIsolate(event->isolate), kShutdown);
   } else {
     UNIMPLEMENTED();
   }
@@ -142,21 +147,23 @@
 DART_EXPORT void Dart_SetBreakpointResolvedHandler(
                             Dart_BreakpointResolvedHandler handler) {
   bp_resolved_handler = handler;
-  Isolate* isolate = Isolate::Current();
-  DARTSCOPE(isolate);
-  isolate->debugger()->SetEventHandler(DebuggerEventHandler);
+  Debugger::SetEventHandler(DebuggerEventHandler);
 }
 
 
 DART_EXPORT void Dart_SetExceptionThrownHandler(
                             Dart_ExceptionThrownHandler handler) {
   exc_thrown_handler = handler;
-  Isolate* isolate = Isolate::Current();
-  DARTSCOPE(isolate);
-  isolate->debugger()->SetEventHandler(DebuggerEventHandler);
+  Debugger::SetEventHandler(DebuggerEventHandler);
 }
 
 
+DART_EXPORT void Dart_SetIsolateEventHandler(Dart_IsolateEventHandler handler) {
+  isolate_event_handler = handler;
+  Debugger::SetEventHandler(DebuggerEventHandler);
+}
+
+
 DART_EXPORT Dart_Handle Dart_SetExceptionPauseInfo(
                             Dart_ExceptionPauseInfo pause_info) {
   Isolate* isolate = Isolate::Current();