Using pre-existing constants instead of hard-coding

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 352 matching lines @@
 
 bool GURL::SchemeIs(const char* lower_ascii_scheme) const {
   if (parsed_.scheme.len <= 0)
     return lower_ascii_scheme == NULL;
   return url::LowerCaseEqualsASCII(spec_.data() + parsed_.scheme.begin,
                                    spec_.data() + parsed_.scheme.end(),
                                    lower_ascii_scheme);
 }
 
 bool GURL::SchemeIsHTTPOrHTTPS() const {
-  return SchemeIs("http") || SchemeIs("https");
+  return SchemeIs(url::kHttpScheme) || SchemeIs(url::kHttpsScheme);
 }
 
 bool GURL::SchemeIsWSOrWSS() const {
-  return SchemeIs("ws") || SchemeIs("wss");
+  return SchemeIs(url::kWsScheme) || SchemeIs(url::kWssScheme);
 }
 
 int GURL::IntPort() const {
   if (parsed_.port.is_nonempty())
     return url::ParsePort(spec_.data(), parsed_.port);
   return url::PORT_UNSPECIFIED;
 }
 
 int GURL::EffectiveIntPort() const {
   int int_port = IntPort();
@@ skipping 134 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();
 }