Cleanup: Remove unneeded forward declarations from remoting.

remoting/jingle_glue/jingle_thread.h

 // Copyright (c) 2011 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 REMOTING_JINGLE_GLUE_JINGLE_THREAD_H_
 #define REMOTING_JINGLE_GLUE_JINGLE_THREAD_H_
 
 #include "base/message_loop.h"
 #include "base/tracked_objects.h"
 #include "base/synchronization/waitable_event.h"
 #include "third_party/libjingle/source/talk/base/messagequeue.h"
 #include "third_party/libjingle/source/talk/base/taskrunner.h"
 #include "third_party/libjingle/source/talk/base/thread.h"
 
 namespace base {
 class MessageLoopProxy;
 }  // namespace base
 
-namespace buzz {
-class XmppClient;
-}  // namespace buzz
-
 namespace remoting {
 
 class TaskPump : public talk_base::MessageHandler,
                  public talk_base::TaskRunner {
  public:
   TaskPump();
 
   // TaskRunner methods.
   virtual void WakeTasks();
   virtual int64 CurrentTime();
 
   // MessageHandler methods.
   virtual void OnMessage(talk_base::Message* pmsg);
 };
 
 class JingleThreadMessageLoop : public MessageLoop {
  public:
-  JingleThreadMessageLoop(talk_base::Thread* thread);
+  explicit JingleThreadMessageLoop(talk_base::Thread* thread);
   virtual ~JingleThreadMessageLoop();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(JingleThreadMessageLoop);
 };
 
 // TODO(sergeyu): This class should be changed to inherit from Chromiums
 // base::Thread instead of libjingle's thread.
 class JingleThread : public talk_base::Thread {
  public:
@@ skipping 21 matching lines @@
   base::WaitableEvent stopped_event_;
   MessageLoop* message_loop_;
   scoped_refptr<base::MessageLoopProxy> message_loop_proxy_;
 
   DISALLOW_COPY_AND_ASSIGN(JingleThread);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_JINGLE_GLUE_JINGLE_THREAD_H_