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

remoting/client/plugin/pepper_address_resolver.h

 // Copyright 2014 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_ADDRESS_RESOLVER_H_
 #define REMOTING_CLIENT_PLUGIN_PEPPER_ADDRESS_RESOLVER_H_
 
+#include "base/macros.h"
 #include "ppapi/cpp/host_resolver.h"
 #include "ppapi/utility/completion_callback_factory.h"
 #include "third_party/webrtc/base/asyncresolverinterface.h"
 
 namespace remoting {
 
 // rtc::AsyncResolverInterface implementation that uses Pepper to resolve
 // addresses.
 class PepperAddressResolver : public rtc::AsyncResolverInterface {
  public:
@@ skipping 17 matching lines @@
   int error_;
 
   pp::CompletionCallbackFactory<PepperAddressResolver> callback_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PepperAddressResolver);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_CLIENT_PLUGIN_PEPPER_ADDRESS_RESOLVER_H_