Added some missing includes, removed one include and removed an undef.

remoting/client/plugin/pepper_packet_socket_factory.h

 // Copyright (c) 2012 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_CLIENT_PLUGIN_PEPPER_PACKET_SOCKET_FACTORY_H_
 #define REMOTING_CLIENT_PLUGIN_PEPPER_PACKET_SOCKET_FACTORY_H_
 
 #include "base/compiler_specific.h"
+#include "base/macros.h"
 #include "ppapi/cpp/instance_handle.h"
 #include "third_party/webrtc/p2p/base/packetsocketfactory.h"
 
 namespace remoting {
 
 class PepperPacketSocketFactory : public rtc::PacketSocketFactory {
  public:
   explicit PepperPacketSocketFactory(const pp::InstanceHandle& instance);
   ~PepperPacketSocketFactory() override;
 
@@ skipping 16 matching lines @@
 
  private:
   const pp::InstanceHandle pp_instance_;
 
   DISALLOW_COPY_AND_ASSIGN(PepperPacketSocketFactory);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_CLIENT_PLUGIN_PEPPER_PACKET_SOCKET_FACTORY_H_