Use a direct include of strings headers in chrome/common/, part 1.

chrome/common/content_settings_pattern_parser.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 "chrome/common/content_settings_pattern_parser.h"
 
-#include "base/string_util.h"
+#include "base/strings/string_util.h"
 #include "chrome/common/url_constants.h"
 #include "extensions/common/constants.h"
 #include "googleurl/src/gurl.h"
 #include "googleurl/src/url_canon.h"
 #include "net/base/net_util.h"
 
 namespace {
 
 const char* kUrlPathSeparator = "/";
 const char* kUrlPortSeparator = ":";
@@ skipping 205 matching lines @@
   }
 
   if (!parts.is_port_wildcard) {
     str += std::string(kUrlPortSeparator) + parts.port;
   }
 
   return str;
 }
 
 }  // namespace content_settings