Remove <iostream> where possible.

chrome/browser/process_info_snapshot_mac.cc

 // Copyright (c) 2009 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.
 
 #include "chrome/browser/process_info_snapshot.h"
 
-#include <iostream>
 #include <sstream>
 
 #include "base/logging.h"
 #include "base/string_util.h"
 #include "base/thread.h"
 
 // Implementation for the Mac; calls '/bin/ps' for information when
 // |Sample()| is called.
 
 // Default constructor.
@@ skipping 142 matching lines @@
     ws_usage->shareable = 0;
     ws_usage->shared = 0;
     return false;
   }
 
   ws_usage->priv = 0;
   ws_usage->shareable = proc_info.rss;
   ws_usage->shared = 0;
   return true;
 }