DevTools: Support eventless host message dispatching.

include/v8-debug.h

 // Copyright 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 106 matching lines @@
    *     asynchronous event. The debugger takes ownership of the data and will
    *     delete it before dying even if there is no message handler.
    * A MessageHandler does not take posession of the message string,
    * and must not rely on the data persisting after the handler returns.
    */
   typedef void (*MessageHandler)(const uint16_t* message, int length,
                                       ClientData* client_data);
 
   /**
    * Debug host dispatch callback function.
-   *
-   * \param dispatch the dispatch value
-   * \param data the data value passed when registering the dispatch handler
    */
-  typedef void (*HostDispatchHandler)(ClientData* dispatch);
-
+  typedef void (*HostDispatchHandler)();
 
   // Set a C debug event listener.
   static bool SetDebugEventListener(EventCallback that,
                                     Handle<Value> data = Handle<Value>());
 
   // Set a JavaScript debug event listener.
   static bool SetDebugEventListener(v8::Handle<v8::Object> that,
                                     Handle<Value> data = Handle<Value>());
 
   // Break execution of JavaScript.
   static void DebugBreak();
 
   // Message based interface. The message protocol is JSON.
   static void SetMessageHandler(MessageHandler handler,
                                 bool message_handler_thread = true);
   static void SendCommand(const uint16_t* command, int length,
                           ClientData* client_data = NULL);
 
   // Dispatch interface.
-  static void SetHostDispatchHandler(HostDispatchHandler handler);
-  static void SendHostDispatch(ClientData* dispatch);
+  static void SetHostDispatchHandler(HostDispatchHandler handler,
+                                     int period = 100);
 
  /**
   * Run a JavaScript function in the debugger.
   * \param fun the function to call
   * \param data passed as second argument to the function
   * With this call the debugger is entered and the function specified is called
   * with the execution state as the first argument. This makes it possible to
   * get access to information otherwise not available during normal JavaScript
   * execution e.g. details on stack frames. The following example show a
   * JavaScript function which when passed to v8::Debug::Call will return the
@@ skipping 18 matching lines @@
 };
 
 
 }  // namespace v8
 
 
 #undef EXPORT
 
 
 #endif  // V8_DEBUG_H_