Enable cpplint for webrtc/examples and fix all uncovered cpplint errors.

webrtc/examples/peerconnection/client/conductor.h

 /*
  *  Copyright 2012 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#ifndef TALK_EXAMPLES_PEERCONNECTION_CLIENT_CONDUCTOR_H_
-#define TALK_EXAMPLES_PEERCONNECTION_CLIENT_CONDUCTOR_H_
+#ifndef WEBRTC_EXAMPLES_PEERCONNECTION_CLIENT_CONDUCTOR_H_
+#define WEBRTC_EXAMPLES_PEERCONNECTION_CLIENT_CONDUCTOR_H_
 #pragma once
 
 #include <deque>
 #include <map>
 #include <set>
 #include <string>
 
 #include "talk/app/webrtc/mediastreaminterface.h"
 #include "talk/app/webrtc/peerconnectioninterface.h"
 #include "webrtc/examples/peerconnection/client/main_wnd.h"
@@ skipping 96 matching lines @@
   rtc::scoped_refptr<webrtc::PeerConnectionFactoryInterface>
       peer_connection_factory_;
   PeerConnectionClient* client_;
   MainWindow* main_wnd_;
   std::deque<std::string*> pending_messages_;
   std::map<std::string, rtc::scoped_refptr<webrtc::MediaStreamInterface> >
       active_streams_;
   std::string server_;
 };
 
-#endif  // TALK_EXAMPLES_PEERCONNECTION_CLIENT_CONDUCTOR_H_
+#endif  // WEBRTC_EXAMPLES_PEERCONNECTION_CLIENT_CONDUCTOR_H_