Continue running if failing to make a debug event into a JSON event for sendi...

src/debug.h

 // Copyright 2006-2008 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 442 matching lines @@
   // when host_running_ is false.
   void DebugEvent(v8::DebugEvent,
                   Handle<Object> exec_state,
                   Handle<Object> event_data);
   // Puts event on the output queue.  Called by V8.
   // This is where V8 hands off
   // processing of the event to the DebugMessageThread thread,
   // which forwards it to the debug_message_handler set by the API.
   void SendMessage(Vector<uint16_t> event_json);
   // Formats an event into JSON, and calls SendMessage.
-  void SetEventJSONFromEvent(Handle<Object> event_data);
+  bool SetEventJSONFromEvent(Handle<Object> event_data);
   // Puts a command coming from the public API on the queue.  Called
   // by the API client thread.  This is where the API client hands off
   // processing of the command to the DebugMessageThread thread.
   void ProcessCommand(Vector<uint16_t> command);
   void OnDebuggerInactive();
 
   // Main function of DebugMessageThread thread.
   void Run();
 
   bool host_running_;  // Is the debugging host running or stopped?
@@ skipping 114 matching lines @@
   }
  private:
   Debug::AddressId id_;
   int reg_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_V8_DEBUG_H_