Replace some hard coded schemes with the constants in /url/url_constants.h.

content/renderer/savable_resources.cc

 // Copyright (c) 2013 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 "content/renderer/savable_resources.h"
 
 #include <set>
 
 #include "base/compiler_specific.h"
 #include "base/logging.h"
@@ skipping 72 matching lines @@
   if (value.isNull())
     return;
   // Get absolute URL.
   GURL u = current_doc.completeURL(value);
   // ignore invalid URL
   if (!u.is_valid())
     return;
   // Ignore those URLs which are not standard protocols. Because FTP
   // protocol does no have cache mechanism, we will skip all
   // sub-resources if they use FTP protocol.
-  if (!u.SchemeIsHTTPOrHTTPS() && !u.SchemeIs("file"))
+  if (!u.SchemeIsHTTPOrHTTPS() && !u.SchemeIs(url::kFileScheme))
     return;
   // Ignore duplicated resource link.
   if (!unique_check->resources_set->insert(u).second)
     return;
   result->resources_list->push_back(u);
   // Insert referrer for above new resource link.
   result->referrer_urls_list->push_back(GURL());
   result->referrer_policies_list->push_back(blink::WebReferrerPolicyDefault);
 }
 
@@ skipping 122 matching lines @@
        it != frames_set.end(); ++it) {
     // Append unique frame source to savable frame list.
     if (resources_set.find(*it) == resources_set.end())
       result->frames_list->push_back(*it);
   }
 
   return true;
 }
 
 }  // namespace content