Move some content url constants to /url.

chrome/common/content_settings_helper.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_helper.h"
 
 #include "base/strings/string_piece.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/common/url_constants.h"
 #include "url/gurl.h"
 
 namespace content_settings_helper {
 
 std::string OriginToString(const GURL& origin) {
   std::string port_component(origin.IntPort() != url::PORT_UNSPECIFIED
                                  ? ":" + origin.port()
                                  : std::string());
-  std::string scheme_component(!origin.SchemeIs(content::kHttpScheme)
+  std::string scheme_component(!origin.SchemeIs(url::kHttpScheme)
                                    ? origin.scheme() +
                                      content::kStandardSchemeSeparator
                                    : std::string());
    return scheme_component + origin.host() + port_component;
 }
 
 base::string16 OriginToString16(const GURL& origin) {
   return base::UTF8ToUTF16(OriginToString(origin));
 }
 
 }  // namespace content_settings_helper