[CleanUp] Use base::STLSetDifference in place of std::set_difference

net/base/mime_util.cc

 // Copyright (c) 2012 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 <algorithm>
 #include <iterator>
 #include <map>
 #include <string>
 
 #include "base/containers/hash_tables.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
+#include "base/stl_util.h"
 #include "base/strings/string_split.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "net/base/mime_util.h"
 #include "net/base/platform_mime_util.h"
 
 using std::string;
 
 namespace {
 
@@ skipping 505 matching lines @@
     std::vector<std::string> pattern_parameters;
     base::SplitString(mime_type_pattern.substr(semicolon + 1),
                       ';', &pattern_parameters);
 
     std::vector<std::string> test_parameters;
     base::SplitString(mime_type.substr(test_semicolon + 1),
                       ';', &test_parameters);
 
     sort(pattern_parameters.begin(), pattern_parameters.end());
     sort(test_parameters.begin(), test_parameters.end());
-    std::vector<std::string> difference;
-    std::set_difference(pattern_parameters.begin(), pattern_parameters.end(),
-                        test_parameters.begin(), test_parameters.end(),
-                        std::inserter(difference, difference.begin()));
+    std::vector<std::string> difference =
+        base::STLSetDifference<std::vector<std::string> >(pattern_parameters,
+                                                          test_parameters);
 
     return difference.size() == 0;
   }
   return true;
 }
 
 // This comparison handles absolute maching and also basic
 // wildcards.  The plugin mime types could be:
 //      application/x-foo
 //      application/*
@@ skipping 442 matching lines @@
   post_data->append("\r\n" + value + "\r\n");
 }
 
 void AddMultipartFinalDelimiterForUpload(const std::string& mime_boundary,
                                          std::string* post_data) {
   DCHECK(post_data);
   post_data->append("--" + mime_boundary + "--\r\n");
 }
 
 }  // namespace net