Remove use of <iostream> where unnecessary.

remoting/host/simple_host_process.cc

 // 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.
 //
 // This is an application of a minimal host process in a Chromoting
 // system. It serves the purpose of gluing different pieces together
 // to make a functional host process for testing.
 //
 // It peforms the following functionality:
 // 1. Connect to the GTalk network and register the machine as a host.
 // 2. Accepts connection through libjingle.
 // 3. Receive mouse / keyboard events through libjingle.
 // 4. Sends screen capture through libjingle.
 
 #include <stdlib.h>
 
-#include <iostream>
+#include <ostream>
 #include <string>
 
 #include "build/build_config.h"
 
 #include "base/at_exit.h"
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/command_line.h"
 #include "base/environment.h"
 #include "base/file_path.h"
@@ skipping 281 matching lines @@
       LOG(ERROR) << "Unknown video codec: " << video_codec;
       return 1;
     }
     config->mutable_video_configs()->push_back(ChannelConfig(
         transport, remoting::protocol::kDefaultStreamVersion, codec));
     simple_host.set_protocol_config(config.release());
   }
 
   return simple_host.Run();
 }