Remove <iostream> where possible.

chrome/test/test_launcher/test_runner.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/test/test_launcher/test_runner.h"
 
-#include <iostream>
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/linked_ptr.h"
 #include "base/logging.h"
 #include "base/process_util.h"
 #include "base/scoped_ptr.h"
 #include "base/string_util.h"
 #include "base/test/test_suite.h"
@@ skipping 244 matching lines @@
   printf("Failing tests:\n");
   for (std::vector<std::string>::const_iterator iter = failed_tests.begin();
        iter != failed_tests.end(); ++iter) {
     printf("%s\n", iter->c_str());
   }
 
   return false;
 }
 
 }  // namespace