Implement issue 549 Make V8 call DebugMessageDispatchHandler with Locker locked

src/api.cc

 // Copyright 2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 3651 matching lines @@
     i::Debugger::SetMessageHandler(MessageHandlerWrapper);
   } else {
     i::Debugger::SetMessageHandler(NULL);
   }
 }
 
 
 void Debug::SetMessageHandler2(v8::Debug::MessageHandler2 handler) {
   EnsureInitialized("v8::Debug::SetMessageHandler");
   ENTER_V8;
-  HandleScope scope;
   i::Debugger::SetMessageHandler(handler);
 }
 
 
 void Debug::SendCommand(const uint16_t* command, int length,
                         ClientData* client_data) {
   if (!i::V8::IsRunning()) return;
   i::Debugger::ProcessCommand(i::Vector<const uint16_t>(command, length),
                               client_data);
 }
 
 
 void Debug::SetHostDispatchHandler(HostDispatchHandler handler,
                                    int period) {
   EnsureInitialized("v8::Debug::SetHostDispatchHandler");
   ENTER_V8;
   i::Debugger::SetHostDispatchHandler(handler, period);
 }
 
 
 void Debug::SetDebugMessageDispatchHandler(
-    DebugMessageDispatchHandler handler) {
+    DebugMessageDispatchHandler handler, bool provide_locker) {
   EnsureInitialized("v8::Debug::SetDebugMessageDispatchHandler");
   ENTER_V8;
-  i::Debugger::SetDebugMessageDispatchHandler(handler);
+  i::Debugger::SetDebugMessageDispatchHandler(handler, provide_locker);
 }
 
 
 Local<Value> Debug::Call(v8::Handle<v8::Function> fun,
                          v8::Handle<v8::Value> data) {
   if (!i::V8::IsRunning()) return Local<Value>();
   ON_BAILOUT("v8::Debug::Call()", return Local<Value>());
   ENTER_V8;
   i::Handle<i::Object> result;
   EXCEPTION_PREAMBLE();
@@ skipping 119 matching lines @@
 
 
 char* HandleScopeImplementer::Iterate(ObjectVisitor* v, char* storage) {
   HandleScopeImplementer* thread_local =
       reinterpret_cast<HandleScopeImplementer*>(storage);
   thread_local->IterateThis(v);
   return storage + ArchiveSpacePerThread();
 }
 
 } }  // namespace v8::internal