Consolidate scheme checks into an easy GURL method

net/proxy/proxy_script_fetcher_impl.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 "net/proxy/proxy_script_fetcher_impl.h"
 
 #include "base/compiler_specific.h"
 #include "base/i18n/icu_string_conversions.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 193 matching lines @@
 
 void ProxyScriptFetcherImpl::OnResponseStarted(URLRequest* request) {
   DCHECK_EQ(request, cur_request_.get());
 
   if (!request->status().is_success()) {
     OnResponseCompleted(request);
     return;
   }
 
   // Require HTTP responses to have a success status code.
-  if (request->url().SchemeIs("http") || request->url().SchemeIs("https")) {
+  if (request->url().SchemeIsHTTPOrHTTPS()) {
     // NOTE about status codes: We are like Firefox 3 in this respect.
     // {IE 7, Safari 3, Opera 9.5} do not care about the status code.
     if (request->GetResponseCode() != 200) {
       VLOG(1) << "Fetched PAC script had (bad) status line: "
               << request->response_headers()->GetStatusLine();
       result_code_ = ERR_PAC_STATUS_NOT_OK;
       request->Cancel();
       return;
     }
 
@@ skipping 87 matching lines @@
   // is still applicable.
   if (cur_request_id_ != id)
     return;
 
   DCHECK(cur_request_.get());
   result_code_ = ERR_TIMED_OUT;
   cur_request_->Cancel();
 }
 
 }  // namespace net