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

url/gurl.cc

 // Copyright 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.
 
 #ifdef WIN32
 #include <windows.h>
 #else
 #include <pthread.h>
 #endif
 
@@ skipping 119 matching lines @@
 #ifndef NDEBUG
   // For testing purposes, check that the parsed canonical URL is identical to
   // what we would have produced. Skip checking for invalid URLs have no meaning
   // and we can't always canonicalize then reproducabely.
   if (is_valid_) {
     url::Component scheme;
     // We can't do this check on the inner_url of a filesystem URL, as
     // canonical_spec actually points to the start of the outer URL, so we'd
     // end up with infinite recursion in this constructor.
     if (!url::FindAndCompareScheme(spec_.data(), spec_.length(),
-                                   "filesystem", &scheme) ||
+                                   url::kFileSystemScheme, &scheme) ||
         scheme.begin == parsed_.scheme.begin) {
       // We need to retain trailing whitespace on path URLs, as the |parsed_|
       // spec we originally received may legitimately contain trailing white-
       // space on the path or  components e.g. if the #ref has been
       // removed from a "foo:hello #ref" URL (see http://crbug.com/291747).
       GURL test_url(spec_, RETAIN_TRAILING_PATH_WHITEPACE);
 
       DCHECK(test_url.is_valid_ == is_valid_);
       DCHECK(test_url.spec_ == spec_);
 
@@ skipping 371 matching lines @@
 void GURL::Swap(GURL* other) {
   spec_.swap(other->spec_);
   std::swap(is_valid_, other->is_valid_);
   std::swap(parsed_, other->parsed_);
   inner_url_.swap(other->inner_url_);
 }
 
 std::ostream& operator<<(std::ostream& out, const GURL& url) {
   return out << url.possibly_invalid_spec();
 }