Remove <iostream> where possible.

sandbox/linux/seccomp/sandbox_impl.h

 // Copyright (c) 2010 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 SANDBOX_IMPL_H__
 #define SANDBOX_IMPL_H__
 
 #include <asm/ldt.h>
 #include <errno.h>
 #include <fcntl.h>
@@ skipping 16 matching lines @@
 #include <sys/stat.h>
 #include <sys/time.h>
 #include <sys/types.h>
 #include <time.h>
 #include <unistd.h>
 
 #define NOINTR_SYS(x)                                                         \
   ({ typeof(x) i__; while ((i__ = (x)) < 0 && sys.my_errno == EINTR); i__;})
 
 #ifdef __cplusplus
-#include <iostream>
 #include <map>
 #include <vector>
 #include "sandbox.h"
 #include "securemem.h"
 #include "tls.h"
 
 namespace playground {
 
 class Sandbox {
   // TODO(markus): restrict access to our private file handles
@@ skipping 648 matching lines @@
   static ProtectedMap                  protectedMap_;
   static std::vector<SecureMem::Args*> secureMemPool_;
 };
 
 } // namespace
 
 using playground::Sandbox;
 #endif // __cplusplus
 
 #endif // SANDBOX_IMPL_H__