As an intermediary step towards having a message pump handling IO through com...

base/message_loop.h

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef BASE_MESSAGE_LOOP_H_
 #define BASE_MESSAGE_LOOP_H_
 
 #include <deque>
 #include <queue>
 #include <string>
@@ skipping 405 matching lines @@
   typedef base::MessagePumpWin::Dispatcher Dispatcher;
   typedef base::MessagePumpWin::Observer Observer;
 
   // Please see MessagePumpWin for definitions of these methods.
   void Run(Dispatcher* dispatcher);
   void AddObserver(Observer* observer);
   void RemoveObserver(Observer* observer);
   void WillProcessMessage(const MSG& message);
   void DidProcessMessage(const MSG& message);
   void PumpOutPendingPaintMessages();
+
+ protected:
+  // TODO(rvargas): Make this platform independent.
+  base::MessagePumpWin* pump_ui() {
+    return static_cast<base::MessagePumpForUI*>(pump_.get());
+  }
 #endif  // defined(OS_WIN)
 };
 
 // Do not add any member variables to MessageLoopForUI!  This is important b/c
 // MessageLoopForUI is often allocated via MessageLoop(TYPE_UI).  Any extra
 // data that you need should be stored on the MessageLoop's pump_ instance.
 COMPILE_ASSERT(sizeof(MessageLoop) == sizeof(MessageLoopForUI),
                MessageLoopForUI_should_not_have_extra_member_variables);
 
 //-----------------------------------------------------------------------------
 // MessageLoopForIO extends MessageLoop with methods that are particular to a
 // MessageLoop instantiated with TYPE_IO.
 //
 // This class is typically used like so:
 //   MessageLoopForIO::current()->...call some method...
 //
 class MessageLoopForIO : public MessageLoop {
  public:
   MessageLoopForIO() : MessageLoop(TYPE_IO) {
   }
 
   // Returns the MessageLoopForIO of the current thread.
   static MessageLoopForIO* current() {
     MessageLoop* loop = MessageLoop::current();
     DCHECK_EQ(MessageLoop::TYPE_IO, loop->type());
     return static_cast<MessageLoopForIO*>(loop);
   }
 
 #if defined(OS_WIN)
-  typedef base::MessagePumpWin::Watcher Watcher;
+  typedef base::MessagePumpForIO::Watcher Watcher;
 
   // Please see MessagePumpWin for definitions of these methods.
   void WatchObject(HANDLE object, Watcher* watcher);
 
+ protected:
+  // TODO(rvargas): Make this platform independent.
+  base::MessagePumpForIO* pump_io() {
+    return static_cast<base::MessagePumpForIO*>(pump_.get());
+  }
+
 #elif defined(OS_POSIX)
   typedef base::MessagePumpLibevent::Watcher Watcher;
 
   // Please see MessagePumpLibevent for definitions of these methods.
   void WatchSocket(int socket, short interest_mask, 
                    struct event* e, Watcher* watcher);
   void UnwatchSocket(struct event* e);
-#endif  // defined(OS_WIN)
+#endif  // defined(OS_POSIX)
 };
 
 // Do not add any member variables to MessageLoopForIO!  This is important b/c
 // MessageLoopForIO is often allocated via MessageLoop(TYPE_IO).  Any extra
 // data that you need should be stored on the MessageLoop's pump_ instance.
 COMPILE_ASSERT(sizeof(MessageLoop) == sizeof(MessageLoopForIO),
                MessageLoopForIO_should_not_have_extra_member_variables);
 
 #endif  // BASE_MESSAGE_LOOP_H_